Scoville Highness
#900405
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#900405
RGB
144, 4, 5
OKLCh
41.2% 0.166 28.7°
CIELAB (D50)
30.2, 52.2, 42.4
What is true of this colour, and of no other
- 13 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
- 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 89.7; on black, Lc -12.5. 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 33.7 and 36.8 and 40.0 — no red cone.
Text on this colour
White text
9.52:1 — passes AA
Black text
2.21:1 — fails AA
White text is the better of the two at9.52:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#900405
protanopia
#323209 · ΔE00 33.7
deuteranopia
#515100 · ΔE00 36.8
tritanopia
#686800 · ΔE00 40.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCarnage Red at ΔE00 0.948: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Carnage RedΔE00 0.948 · #940008
- ChokecherryΔE00 1.158 · #92000a
- Scab RedΔE00 1.179 · #8b0000
- Blood OmenΔE00 1.207 · #8a0303
- Jack and CokeΔE00 1.418 · #920f0e
- Roasted PepperΔE00 1.54 · #890a01
- Glass BullΔE00 1.698 · #880000
- Crimson RedΔE00 1.791 · #980001
- Cavalry BrownΔE00 1.826 · #990003
- ChanticleerΔE00 1.884 · #870000
- Kiss of a VampireΔE00 1.907 · #8a0009
- EmergencyΔE00 1.983 · #911911
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.