Serpent Sceptre
#bbcc00
A yellow that is saturated. It is very light — it works as a page background, not as text.
Hex
#bbcc00
RGB
187, 204, 0
OKLCh
80.4% 0.183 115.7°
CIELAB (D50)
78.7, -20.4, 77.2
What is true of this colour, and of no other
- 8 other named colours sit within ΔE00 2 of it.
- It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
- As text on white it measures APCA Lc 32.8; on black, Lc -69.9. The sign is the polarity, which the WCAG ratio discards.
- Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
- tritanopia shifts it by ΔE00 17.6 — no blue cone.
Text on this colour
White text
1.79:1 — fails AA
Black text
11.75:1 — passes AA
Black text is the better of the two at11.75:1. That is enough for body text.
As text on white, it needs to change
#727d00 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.
The same colour, with one cone missing
As you see it
#bbcc00
protanopia
#caca00 · ΔE00 3.9
deuteranopia
#c7c708 · ΔE00 3.8
tritanopia
#c4c49a · ΔE00 17.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isGreen Elisabeth Ⅱ at ΔE00 0.395: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Green Elisabeth ⅡΔE00 0.395 · #bbcc11
- Cheerly KiwiΔE00 0.445 · #bccb08
- Garlic PestoΔE00 0.856 · #bfcf00
- Luscious LeekΔE00 1.103 · #bbcc22
- Chartreuse SparkΔE00 1.678 · #b5cc18
- Key Lime PieΔE00 1.697 · #bfc921
- Lime RaspΔE00 1.735 · #b5ce08
- Rio GrandeΔE00 1.758 · #b7c61a
- Leafy SeadragonΔE00 2.02 · #b6c406
- BileΔE00 2.275 · #b5c306
- Evening PrimroseΔE00 2.424 · #c2d61d
- Lime TwistΔE00 2.545 · #c6d624
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.