css/css-color

edit

WPT coverage of the tests of css/css-color at the revision 5602b0f210e3. The tests link to their results in the browsers on wpt.fyi. The tentative tests (experimental features) and the reftests are listed separately from the stable tests.

Group	Passing	Tests	Disabled	Pass rate
Stable	67	69	0	97%
Tentative	0	0	0	–
Reftests	304	308	1	99%
All	371	377	1	99%

Failure reasons

The tests that do not pass (failing or disabled), by kind of reason. A test with several reasons counts once per kind.

BUG: 1
TEST BUG: 4
FLAKY: 1

Stable tests

Test	Result	Subtests	Kind	Description
`animation/color-composition.html`	Pass	20 / 20
`animation/color-interpolation.html`	Pass	192 / 192
`animation/opacity-interpolation.html`	Pass	120 / 120
`canvas-display-p3-gamut-mapping.html`	Pass	17 / 17
`canvas-srgb-gamut-mapping.html`	Pass	14 / 14
`color-initial-canvastext.html`	Pass	2 / 2
`color-mix-currentcolor-parent-change.html`	Pass	1 / 1
`color-mix-currentcolor-visited-getcomputedstyle.html`	Pass	1 / 1
`color-mix-missing-components.html`	Pass	3 / 3
`computed-color.html`	Pass	10 / 10
`contrast-color-currentcolor-inherited.html`	Pass	1 / 1
`inheritance.html`	Pass	4 / 4
`light-dark-basic.html`	Pass	2 / 2
`light-dark-currentcolor-in-color.html`	Pass	1 / 1
`light-dark-image.html`	Pass	35 / 35
`nested-color-mix-with-currentcolor.html`	Pass	2 / 2
`none-components-treated-as-zero.html`	Pass	18 / 18
`parsing/alpha-color-computed.html`	Pass	33 / 33
`parsing/alpha-color-parsing-invalid.html`	Pass	23 / 23
`parsing/alpha-color-parsing-valid.html`	Pass	45 / 45
`parsing/color-computed-color-function.html`	Pass	468 / 468
`parsing/color-computed-color-mix-function.html`	Pass	977 / 977
`parsing/color-computed-contrast-color-function.html`	Pass	17 / 17
`parsing/color-computed-hex-color.html`	Pass	6 / 6
`parsing/color-computed-hsl.html`	Pass	3,753 / 3,753
`parsing/color-computed-hwb.html`	Pass	70 / 70
`parsing/color-computed-lab.html`	Pass	136 / 136
`parsing/color-computed-named-color.html`	Pass	455 / 455
`parsing/color-computed-none.html`	Pass	678 / 678
`parsing/color-computed-powerless.html`	Fail	568 / 570	TEST BUG	a computed value with a negative lightness or a hue that serializes as 360 cannot round-trip, as parsing clamps the lightness and normalizes the hue (fails in every browser)
`parsing/color-computed-relative-color.html`	Fail	1,185 / 1,187	TEST BUG	two subtests convert from and to `rec2020` with the pure 2.4 gamma transfer function of the current CSS Color 4 draft (ITU-R BT.1886), while the library, as every browser and the rec2020 reftests, uses the piecewise ITU-R BT.2020 transfer function (1.0993 * L^0.45 - 0.0993): `color(from color(rec2020 0.25 0.5 0.75) srgb r g b)` is `color(srgb -0.280036 0.565528 0.79951)` instead of `color(srgb -0.328686 0.491201 0.76185)`; fails in every browser
`parsing/color-computed-rgb.html`	Pass	99 / 99
`parsing/color-computed.html`	Pass	16 / 16
`parsing/color-invalid-color-function.html`	Pass	124 / 124
`parsing/color-invalid-color-layers-function.html`	Pass	93 / 93
`parsing/color-invalid-color-mix-function.html`	Pass	141 / 141
`parsing/color-invalid-contrast-color-function.html`	Pass	9 / 9
`parsing/color-invalid-hex-color.html`	Pass	10 / 10
`parsing/color-invalid-hsl.html`	Pass	23 / 23
`parsing/color-invalid-hwb.html`	Pass	6 / 6
`parsing/color-invalid-lab.html`	Pass	18 / 18
`parsing/color-invalid-named-color.html`	Pass	184 / 184
`parsing/color-invalid-relative-color.html`	Pass	161 / 161
`parsing/color-invalid-rgb.html`	Pass	30 / 30
`parsing/color-invalid.html`	Pass	12 / 12
`parsing/color-mix-out-of-gamut.html`	Pass	18 / 18
`parsing/color-valid-color-function.html`	Pass	340 / 340
`parsing/color-valid-color-layers-function.html`	Pass	170 / 170
`parsing/color-valid-color-mix-function.html`	Pass	677 / 677
`parsing/color-valid-contrast-color-function.html`	Pass	17 / 17
`parsing/color-valid-hsl.html`	Pass	60 / 60
`parsing/color-valid-hwb.html`	Pass	39 / 39
`parsing/color-valid-lab.html`	Pass	158 / 158
`parsing/color-valid-relative-color-opaque-alpha.html`	Pass	8 / 8
`parsing/color-valid-relative-color.html`	Pass	1,147 / 1,147
`parsing/color-valid-rgb.html`	Pass	70 / 70
`parsing/color-valid-system-color.html`	Pass	19 / 19
`parsing/color-valid.html`	Pass	17 / 17
`parsing/contrast-color-function-calc-container.html`	Pass	2 / 2
`parsing/opacity-computed.html`	Pass	30 / 30
`parsing/opacity-invalid.html`	Pass	3 / 3
`parsing/opacity-valid.html`	Pass	30 / 30
`parsing/relative-color-out-of-gamut.html`	Pass	27 / 27
`relative-color-with-system-color.html`	Pass	3 / 3
`relative-color-with-zoom.html`	Pass	1 / 1
`relative-currentcolor-visited-getcomputedstyle.html`	Pass	1 / 1
`system-color-compute.html`	Pass	27 / 27
`system-color-consistency.html`	Pass	62 / 62
`system-color-support.html`	Pass	21 / 21

Reftests

Test	Result	Variants	Kind	Description
`a98rgb-001.html`	Pass	1 / 1
`a98rgb-002.html`	Pass	1 / 1
`a98rgb-003.html`	Pass	1 / 1
`a98rgb-004.html`	Pass	1 / 1
`animation/contrast-color-interpolation.html`	Pass	1 / 1
`animation/opacity-animation-ending-correctly-001.html`	Pass	1 / 1
`animation/opacity-animation-ending-correctly-002.html`	Disabled	–	FLAKY	reftest whose result depends on the platform: the glyphs are antialiased by the font engine of the platform (CoreText, FreeType, DirectWrite), so it passes on Linux and fails on macOS or the reverse
`at-color-profile-001.html`	Pass	1 / 1
`background-color-hsl-001.html`	Pass	1 / 1
`background-color-hsl-002.html`	Pass	1 / 1
`background-color-hsl-003.html`	Pass	1 / 1
`background-color-hsl-004.html`	Pass	1 / 1
`background-color-rgb-001.html`	Pass	1 / 1
`background-color-rgb-002.html`	Pass	1 / 1
`background-color-rgb-003.html`	Pass	1 / 1
`body-opacity-0-to-1-stacking-context.html`	Pass	1 / 1
`border-bottom-color.xht`	Pass	1 / 1
`border-color-currentcolor.html`	Pass	1 / 1
`border-left-color.xht`	Pass	1 / 1
`border-right-color.xht`	Pass	1 / 1
`border-top-color.xht`	Pass	1 / 1
`canvas-change-opacity.html`	Pass	1 / 1
`clip-opacity-out-of-flow.html`	Pass	1 / 1
`color-001.html`	Pass	1 / 1
`color-002.html`	Pass	1 / 1
`color-003.html`	Pass	1 / 1
`color-layers-no-blend-mode.html`	Pass	1 / 1
`color-mix-basic-001.html`	Pass	1 / 1
`color-mix-currentcolor-001.html`	Pass	1 / 1
`color-mix-currentcolor-002.html`	Pass	1 / 1
`color-mix-currentcolor-003.html`	Pass	1 / 1
`color-mix-currentcolor-nested-for-color-property.html`	Pass	1 / 1
`color-mix-currentcolor-visited.html`	Pass	1 / 1
`color-mix-non-srgb-001.html`	Fail	0 / 1	TEST BUG	the references are the colors of the test clipped to sRGB per channel, as the browsers paint them, while the library CSS gamut maps the colors outside of sRGB (https://drafts.csswg.org/css-color-4/#css-gamut-mapping: the OkLCh chroma is reduced at constant lightness and hue): `color-mix(in lab, red, green)` is painted (160,108,0) instead of the clipped (161,108,0)
`color-mix-percents-01.html`	Pass	1 / 1
`color-mix-percents-02.html`	Pass	1 / 1
`color-svg-visited.html`	Pass	1 / 1
`composited-filters-under-opacity.html`	Pass	1 / 1
`contrast-color-001.html`	Pass	1 / 1
`contrast-color-style-query.html`	Pass	1 / 1
`currentcolor-001.html`	Pass	1 / 1
`currentcolor-002.html`	Pass	1 / 1
`currentcolor-003.html`	Fail	0 / 1	BUG	the `currentcolor` of `filter: drop-shadow()` on an inline box whose first fragment is on a first line with a `::first-line` color: the filter applies to the box as a whole (all its fragments) with the color of the style of the box, where the shadow of the fragment of the first line is expected in the `::first-line` color (the backgrounds, borders, outlines and shadows of the fragments are painted in it; only Firefox passes this test)
`currentcolor-004.html`	Pass	1 / 1
`currentcolor-005.html`	Pass	1 / 1
`currentcolor-visited-fallback.html`	Pass	1 / 1
`deprecated-sameas-001.html`	Pass	1 / 1
`deprecated-sameas-002.html`	Pass	1 / 1
`deprecated-sameas-003.html`	Pass	1 / 1
`deprecated-sameas-004.html`	Pass	1 / 1
`deprecated-sameas-005.html`	Pass	1 / 1
`deprecated-sameas-006.html`	Pass	1 / 1
`deprecated-sameas-007.html`	Pass	1 / 1
`deprecated-sameas-008.html`	Pass	1 / 1
`deprecated-sameas-009.html`	Pass	1 / 1
`deprecated-sameas-010.html`	Pass	1 / 1
`deprecated-sameas-011.html`	Pass	1 / 1
`deprecated-sameas-012.html`	Pass	1 / 1
`deprecated-sameas-013.html`	Pass	1 / 1
`deprecated-sameas-014.html`	Pass	1 / 1
`deprecated-sameas-015.html`	Pass	1 / 1
`deprecated-sameas-016.html`	Pass	1 / 1
`deprecated-sameas-017.html`	Pass	1 / 1
`deprecated-sameas-018.html`	Pass	1 / 1
`deprecated-sameas-019.html`	Pass	1 / 1
`deprecated-sameas-020.html`	Pass	1 / 1
`deprecated-sameas-021.html`	Pass	1 / 1
`deprecated-sameas-022.html`	Pass	1 / 1
`deprecated-sameas-023.html`	Pass	1 / 1
`display-p3-001.html`	Pass	1 / 1
`display-p3-002.html`	Pass	1 / 1
`display-p3-003.html`	Pass	1 / 1
`display-p3-004.html`	Pass	1 / 1
`display-p3-005.html`	Pass	1 / 1
`display-p3-006.html`	Pass	1 / 1
`display-p3-linear-001.html`	Pass	1 / 1
`display-p3-linear-002.html`	Pass	1 / 1
`display-p3-linear-003.html`	Pass	1 / 1
`display-p3-linear-004.html`	Pass	1 / 1
`display-p3-linear-005.html`	Pass	1 / 1
`display-p3-linear-006.html`	Pass	1 / 1
`filters-under-will-change-opacity.html`	Pass	1 / 1
`hex-001.html`	Pass	1 / 1
`hex-002.html`	Pass	1 / 1
`hex-003.html`	Pass	1 / 1
`hex-004.html`	Pass	1 / 1
`hsl-001.html`	Pass	1 / 1
`hsl-002.html`	Pass	1 / 1
`hsl-003.html`	Pass	1 / 1
`hsl-004.html`	Pass	1 / 1
`hsl-005.html`	Pass	1 / 1
`hsl-006.html`	Pass	1 / 1
`hsl-007.html`	Pass	1 / 1
`hsl-008.html`	Pass	1 / 1
`hsl-clamp-negative-saturation.html`	Pass	1 / 1
`hsla-001.html`	Pass	1 / 1
`hsla-002.html`	Pass	1 / 1
`hsla-003.html`	Pass	1 / 1
`hsla-004.html`	Pass	1 / 1
`hsla-005.html`	Pass	1 / 1
`hsla-006.html`	Pass	1 / 1
`hsla-007.html`	Pass	1 / 1
`hsla-008.html`	Pass	1 / 1
`hsla-clamp-negative-saturation.html`	Pass	1 / 1
`hwb-001.html`	Pass	1 / 1
`hwb-002.html`	Pass	1 / 1
`hwb-003.html`	Pass	1 / 1
`hwb-004.html`	Pass	1 / 1
`hwb-005.html`	Pass	1 / 1
`inline-opacity-float-child.html`	Pass	1 / 1
`lab-001.html`	Pass	1 / 1
`lab-002.html`	Pass	1 / 1
`lab-003.html`	Pass	1 / 1
`lab-004.html`	Pass	1 / 1
`lab-005.html`	Pass	1 / 1
`lab-006.html`	Pass	1 / 1
`lab-007.html`	Pass	1 / 1
`lab-008.html`	Pass	1 / 1
`lab-l-over-100-1.html`	Pass	1 / 1
`lab-l-over-100-2.html`	Pass	1 / 1
`lch-001.html`	Pass	1 / 1
`lch-002.html`	Pass	1 / 1
`lch-003.html`	Pass	1 / 1
`lch-004.html`	Pass	1 / 1
`lch-005.html`	Pass	1 / 1
`lch-006.html`	Pass	1 / 1
`lch-007.html`	Pass	1 / 1
`lch-008.html`	Pass	1 / 1
`lch-009.html`	Pass	1 / 1
`lch-010.html`	Pass	1 / 1
`lch-l-over-100-1.html`	Pass	1 / 1
`lch-l-over-100-2.html`	Pass	1 / 1
`light-dark-currentcolor.html`	Pass	1 / 1
`light-dark-image-none-interpolation.html`	Pass	1 / 1
`light-dark-image-none.html`	Pass	1 / 1
`light-dark-inheritance.html`	Pass	1 / 1
`named-001.html`	Pass	1 / 1
`oklab-001.html`	Pass	1 / 1
`oklab-002.html`	Pass	1 / 1
`oklab-003.html`	Pass	1 / 1
`oklab-004.html`	Pass	1 / 1
`oklab-005.html`	Pass	1 / 1
`oklab-006.html`	Pass	1 / 1
`oklab-007.html`	Pass	1 / 1
`oklab-008.html`	Pass	1 / 1
`oklab-009.html`	Pass	1 / 1
`oklab-l-almost-0.html`	Pass	1 / 1
`oklab-l-almost-1.html`	Pass	1 / 1
`oklab-l-over-1-1.html`	Pass	1 / 1
`oklab-l-over-1-2.html`	Pass	1 / 1
`oklch-001.html`	Pass	1 / 1
`oklch-002.html`	Pass	1 / 1
`oklch-003.html`	Pass	1 / 1
`oklch-004.html`	Pass	1 / 1
`oklch-005.html`	Pass	1 / 1
`oklch-006.html`	Pass	1 / 1
`oklch-007.html`	Pass	1 / 1
`oklch-008.html`	Pass	1 / 1
`oklch-009.html`	Pass	1 / 1
`oklch-010.html`	Pass	1 / 1
`oklch-011.html`	Pass	1 / 1
`oklch-l-almost-0.html`	Pass	1 / 1
`oklch-l-almost-1.html`	Pass	1 / 1
`oklch-l-over-1-1.html`	Pass	1 / 1
`oklch-l-over-1-2.html`	Pass	1 / 1
`opacity-overlapping-letters.html`	Pass	1 / 1
`out-of-gamut-legacy-rgb.html`	Pass	1 / 1
`predefined-001.html`	Pass	1 / 1
`predefined-002.html`	Pass	1 / 1
`predefined-005.html`	Pass	1 / 1
`predefined-006.html`	Pass	1 / 1
`predefined-007.html`	Pass	1 / 1
`predefined-008.html`	Pass	1 / 1
`predefined-009.html`	Pass	1 / 1
`predefined-010.html`	Pass	1 / 1
`predefined-011.html`	Pass	1 / 1
`predefined-012.html`	Pass	1 / 1
`predefined-016.html`	Pass	1 / 1
`prophoto-rgb-001.html`	Pass	1 / 1
`prophoto-rgb-002.html`	Pass	1 / 1
`prophoto-rgb-003.html`	Pass	1 / 1
`prophoto-rgb-004.html`	Pass	1 / 1
`prophoto-rgb-005.html`	Pass	1 / 1
`rec2020-001.html`	Pass	1 / 1
`rec2020-002.html`	Pass	1 / 1
`rec2020-003.html`	Pass	1 / 1
`rec2020-004.html`	Pass	1 / 1
`rec2020-005.html`	Pass	1 / 1
`relative-currentcolor-a98rgb-01.html`	Pass	1 / 1
`relative-currentcolor-displayp3-01.html`	Pass	1 / 1
`relative-currentcolor-hsl-01.html`	Pass	1 / 1
`relative-currentcolor-hsl-02.html`	Pass	1 / 1
`relative-currentcolor-hwb-01.html`	Pass	1 / 1
`relative-currentcolor-lab-01.html`	Pass	1 / 1
`relative-currentcolor-lch-01.html`	Pass	1 / 1
`relative-currentcolor-oklab-01.html`	Pass	1 / 1
`relative-currentcolor-oklch-01.html`	Pass	1 / 1
`relative-currentcolor-prophoto-01.html`	Pass	1 / 1
`relative-currentcolor-rec2020-01.html`	Pass	1 / 1
`relative-currentcolor-rec2020-02.html`	Pass	1 / 1
`relative-currentcolor-rgb-01.html`	Pass	1 / 1
`relative-currentcolor-rgb-02.html`	Pass	1 / 1
`relative-currentcolor-xyzd50-01.html`	Pass	1 / 1
`relative-currentcolor-xyzd65-01.html`	Pass	1 / 1
`rgb-001.html`	Pass	1 / 1
`rgb-002.html`	Pass	1 / 1
`rgb-003.html`	Pass	1 / 1
`rgb-004.html`	Pass	1 / 1
`rgb-005.html`	Pass	1 / 1
`rgb-006.html`	Pass	1 / 1
`rgb-007.html`	Pass	1 / 1
`rgb-008.html`	Pass	1 / 1
`rgba-001.html`	Pass	1 / 1
`rgba-002.html`	Pass	1 / 1
`rgba-003.html`	Pass	1 / 1
`rgba-004.html`	Pass	1 / 1
`rgba-005.html`	Pass	1 / 1
`rgba-006.html`	Pass	1 / 1
`rgba-007.html`	Pass	1 / 1
`rgba-008.html`	Pass	1 / 1
`srgb-linear-001.html`	Pass	1 / 1
`srgb-linear-002.html`	Pass	1 / 1
`srgb-linear-003.html`	Pass	1 / 1
`srgb-linear-004.html`	Pass	1 / 1
`system-color-hightlights-vs-getSelection-001.html`	Pass	1 / 1
`system-color-hightlights-vs-getSelection-002.html`	Pass	1 / 1
`t31-color-currentColor-b.xht`	Pass	1 / 1
`t31-color-text-a.xht`	Pass	1 / 1
`t32-opacity-basic-0.0-a.xht`	Pass	1 / 1
`t32-opacity-basic-0.6-a.xht`	Pass	1 / 1
`t32-opacity-basic-1.0-a.xht`	Pass	1 / 1
`t32-opacity-clamping-0.0-b.xht`	Pass	1 / 1
`t32-opacity-clamping-1.0-b.xht`	Pass	1 / 1
`t32-opacity-offscreen-b.xht`	Pass	1 / 1
`t32-opacity-offscreen-multiple-boxes-1-c.xht`	Pass	1 / 1
`t32-opacity-offscreen-multiple-boxes-2-c.xht`	Pass	1 / 1
`t32-opacity-offscreen-with-alpha-c.xht`	Pass	1 / 1
`t32-opacity-zorder-c.xht`	Pass	1 / 1
`t41-html4-keywords-a.xht`	Pass	1 / 1
`t421-rgb-clip-outside-gamut-b.xht`	Pass	1 / 1
`t421-rgb-func-int-a.xht`	Pass	1 / 1
`t421-rgb-func-no-mixed-f.xht`	Pass	1 / 1
`t421-rgb-func-pct-a.xht`	Pass	1 / 1
`t421-rgb-func-whitespace-b.xht`	Pass	1 / 1
`t421-rgb-hex-parsing-f.xht`	Pass	1 / 1
`t421-rgb-hex3-a.xht`	Pass	1 / 1
`t421-rgb-hex3-expand-b.xht`	Pass	1 / 1
`t421-rgb-hex6-a.xht`	Pass	1 / 1
`t421-rgb-values-meaning-b.xht`	Pass	1 / 1
`t422-rgba-a0.0-a.xht`	Pass	1 / 1
`t422-rgba-a0.6-a.xht`	Pass	1 / 1
`t422-rgba-a1.0-a.xht`	Pass	1 / 1
`t422-rgba-clamping-a0.0-b.xht`	Pass	1 / 1
`t422-rgba-clamping-a1.0-b.xht`	Pass	1 / 1
`t422-rgba-clip-outside-device-gamut-b.xht`	Pass	1 / 1
`t422-rgba-func-int-a.xht`	Pass	1 / 1
`t422-rgba-func-no-mixed-f.xht`	Pass	1 / 1
`t422-rgba-func-pct-a.xht`	Pass	1 / 1
`t422-rgba-func-whitespace-b.xht`	Pass	1 / 1
`t422-rgba-values-meaning-b.xht`	Pass	1 / 1
`t423-transparent-1-a.xht`	Pass	1 / 1
`t423-transparent-2-a.xht`	Pass	1 / 1
`t424-hsl-basic-a.xht`	Pass	1 / 1
`t424-hsl-h-rotating-b.xht`	Pass	1 / 1
`t424-hsl-parsing-f.xht`	Pass	1 / 1
`t424-hsl-values-b-1.html`	Pass	1 / 1
`t424-hsl-values-b-10.html`	Pass	1 / 1
`t424-hsl-values-b-11.html`	Pass	1 / 1
`t424-hsl-values-b-12.html`	Pass	1 / 1
`t424-hsl-values-b-13.html`	Pass	1 / 1
`t424-hsl-values-b-14.html`	Pass	1 / 1
`t424-hsl-values-b-15.html`	Pass	1 / 1
`t424-hsl-values-b-2.html`	Pass	1 / 1
`t424-hsl-values-b-3.html`	Pass	1 / 1
`t424-hsl-values-b-4.html`	Pass	1 / 1
`t424-hsl-values-b-5.html`	Pass	1 / 1
`t424-hsl-values-b-6.html`	Pass	1 / 1
`t424-hsl-values-b-7.html`	Pass	1 / 1
`t424-hsl-values-b-8.html`	Pass	1 / 1
`t424-hsl-values-b-9.html`	Pass	1 / 1
`t425-hsla-basic-a.xht`	Pass	1 / 1
`t425-hsla-h-rotating-b.xht`	Pass	1 / 1
`t425-hsla-parsing-f.xht`	Pass	1 / 1
`t425-hsla-values-b.xht`	Pass	1 / 1
`t43-svg-keywords-a.xht`	Pass	1 / 1
`t44-currentcolor-background-b.xht`	Pass	1 / 1
`t44-currentcolor-border-b.xht`	Pass	1 / 1
`t44-currentcolor-inherited-c.xht`	Pass	1 / 1
`tagged-images-001.html`	Pass	1 / 1
`tagged-images-002.html`	Pass	1 / 1
`tagged-images-003.html`	Pass	1 / 1
`tagged-images-004.html`	Pass	1 / 1
`untagged-images-001.html`	Pass	1 / 1
`xyz-001.html`	Pass	1 / 1
`xyz-002.html`	Pass	1 / 1
`xyz-003.html`	Pass	1 / 1
`xyz-004.html`	Pass	1 / 1
`xyz-005.html`	Pass	1 / 1
`xyz-d50-001.html`	Pass	1 / 1
`xyz-d50-002.html`	Pass	1 / 1
`xyz-d50-003.html`	Pass	1 / 1
`xyz-d50-004.html`	Fail	0 / 1	TEST BUG	the reference is `color(xyz-d50 0 1 0)` converted to sRGB with 6 digits (`color(srgb -1.20716 1.3163 -0.489014)`), the same color only when both are clipped per channel as in the browsers: the library CSS gamut maps them (https://drafts.csswg.org/css-color-4/#css-gamut-mapping), and the rounding of the reference moves the mapped color by one level (152,255,198 instead of 152,255,199)
`xyz-d50-005.html`	Pass	1 / 1
`xyz-d65-001.html`	Pass	1 / 1
`xyz-d65-002.html`	Pass	1 / 1
`xyz-d65-003.html`	Pass	1 / 1
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