Rebellion Red
#cc0404
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#cc0404
RGB
204, 4, 4
OKLCh
53.2% 0.217 29.1°
CIELAB (D50)
43.5, 68.0, 57.7
What is true of this colour, and of no other
- 22 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 76.5; on black, Lc -25.2. 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 40.2 and 42.9 and 47.7 — no red cone.
Text on this colour
White text
5.86:1 — passes AA
Black text
3.59:1 — large text only
White text is the better of the two at5.86:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#cc0404
protanopia
#4a4a0c · ΔE00 40.2
deuteranopia
#757500 · ΔE00 42.9
tritanopia
#959500 · ΔE00 47.7
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSignal at ΔE00 0.236: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- SignalΔE00 0.236 · #cc0002
- Scarlet GlowΔE00 0.295 · #cb0103
- Albanian RedΔE00 0.363 · #cc0001
- Love for AllΔE00 0.38 · #cd0106
- Lannister RedΔE00 0.412 · #cd0101
- CommunistΔE00 0.504 · #cc0000
- Thai ChilliΔE00 0.511 · #ce0001
- Soviet RedΔE00 0.527 · #cd0000
- Naga MorichΔE00 0.724 · #c90406
- Diablo RedΔE00 0.854 · #cd0d01
- Red EpiphyllumΔE00 0.944 · #d00000
- Highway to HellΔE00 0.968 · #cd1102
7 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.