Fierce Red
#cc0021
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#cc0021
RGB
204, 0, 33
OKLCh
53.3% 0.216 24.9°
CIELAB (D50)
43.5, 68.6, 45.5
What is true of this colour, and of no other
- 19 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 -25.3. 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 39.2 and 45.5 and 50.5 — no red cone.
Text on this colour
White text
5.85:1 — passes AA
Black text
3.59:1 — large text only
White text is the better of the two at5.85:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#cc0021
protanopia
#4a4a24 · ΔE00 39.2
deuteranopia
#757506 · ΔE00 45.5
tritanopia
#949400 · ΔE00 50.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRare Rhubarb at ΔE00 0.243: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Rare RhubarbΔE00 0.243 · #cc0022
- Pedestrian RedΔE00 0.765 · #cc1122
- Marilyn MonRougeΔE00 0.828 · #c9001e
- Dangerous AffairΔE00 1.048 · #d00220
- Chinese RedΔE00 1.07 · #cd071e
- MonzaΔE00 1.114 · #c7031e
- Philippine RedΔE00 1.267 · #ce1127
- Say It With Red RosesΔE00 1.326 · #c7111e
- Bloodthirsty LipsΔE00 1.373 · #c6101e
- Super Rose RedΔE00 1.388 · #cb1028
- LavaΔE00 1.472 · #cf1020
- Star and Crescent RedΔE00 1.485 · #c51f26
6 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.