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[css-color-4] Leaf example in §2: the rec2020 value names a different color #14631
Description
In §2 (Color Terminology), the leaf measured as lch(51.2345% 21.2 130) is written in five RGB spaces. Four of them match the spec's own sample code (§19). The rec2020 value does not:
| printed | computed from lch(51.2345% 21.2 130) | |
|---|---|---|
| srgb | 0.41587 0.503670 0.36664 | 0.41585 0.50370 0.36664 |
| display-p3 | 0.43313 0.50108 0.37950 | 0.43309 0.50109 0.37955 |
| a98-rgb | 0.44091 0.49971 0.37408 | 0.44088 0.49972 0.37412 |
| prophoto-rgb | 0.36589 0.41717 0.31333 | 0.36591 0.41716 0.31331 |
| rec2020 | 0.6295 0.9657 0.3633 | 0.47428 0.52316 0.41425 |
The printed rec2020 value decodes to about lch(87.8% 113.3 134.4), a bright saturated green rather than the leaf. It isn't the old transfer function either: with the BT.2020 OETF the leaf is 0.39188 0.44676 0.32509.
Suggested fix: color(rec2020 0.47428 0.52316 0.41425).
Computed with the §19 sample code (lin_2020 / gam_2020, gamma 2.4) and with colorjs.io 0.7.1; the color-space npm library agrees.
Activity
16 spaces, 221 in all: CIECAM16, CIECAM97s, ACES 2.0 JMh, Hellwig 202…
romainmenke commentedon Oct 20, 2026
This matches what I get on my end:
color(rec2020 0.47428158 0.5231572 0.41425481)svgeesus commentedon Oct 20, 2026
Thanks for reporting this, agreed and fixed.
[css-color-4][editorial] Correct rec2020 values in leaf example. Fix w…