Succubus
#990022
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#990022
RGB
153, 0, 34
OKLCh
43.2% 0.174 21.0°
CIELAB (D50)
32.2, 55.7, 29.6
What is true of this colour, and of no other
- 5 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 87.7; on black, Lc -14.4. 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 32.4 and 39.7 and 45.4 — no red cone.
Text on this colour
White text
8.83:1 — passes AA
Black text
2.38:1 — fails AA
White text is the better of the two at8.83:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#990022
protanopia
#353524 · ΔE00 32.4
deuteranopia
#565618 · ΔE00 39.7
tritanopia
#6e6e00 · ΔE00 45.4
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isXmas Candy at ΔE00 0.641: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Xmas CandyΔE00 0.641 · #990020
- Tilted RedΔE00 1.406 · #991122
- Nigritella RedΔE00 1.466 · #931121
- Old WineΔE00 1.758 · #90091f
- BurgundyΔE00 1.816 · #900020
- EstrorubyΔE00 2.331 · #9b101f
- Sacred ScarletΔE00 2.625 · #950c1b
- Ruby RedΔE00 2.699 · #9b111e
- BarberaΔE00 2.8 · #8b031c
- Flame HawkfishΔE00 2.89 · #960018
- Bacchic BurgundyΔE00 2.928 · #95122c
- Quite RedΔE00 2.982 · #97171e
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.