Velvet Volcano
#ab0102
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#ab0102
RGB
171, 1, 2
OKLCh
46.6% 0.191 29.0°
CIELAB (D50)
36.1, 59.8, 50.8
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 84.0; on black, Lc -18.0. 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 36.9 and 39.6 and 43.5 — no red cone.
Text on this colour
White text
7.67:1 — passes AA
Black text
2.74:1 — fails AA
White text is the better of the two at7.67:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#ab0102
protanopia
#3d3d07 · ΔE00 36.9
deuteranopia
#616100 · ΔE00 39.6
tritanopia
#7c7c00 · ΔE00 43.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isHeartbeat at ΔE00 0.365: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- HeartbeatΔE00 0.365 · #aa0000
- Red DoorΔE00 0.396 · #ac0000
- Red PentacleΔE00 1.038 · #a60000
- Natural LeatherΔE00 1.049 · #a80e00
- Real RedΔE00 1.141 · #a90308
- Kid IcarusΔE00 1.181 · #a81000
- Cave PaintingΔE00 1.273 · #aa1100
- Mordant Red 19ΔE00 1.293 · #ae0c00
- Stanger RedΔE00 1.43 · #a40000
- Gory RedΔE00 1.539 · #a30800
- All Systems RedΔE00 1.62 · #b30103
- RufousΔE00 1.68 · #a81c07
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.