Sacrifice Altar
#850101
A red that is saturated. It is dark — it carries white text and needs care with black.
Hex
#850101
RGB
133, 1, 1
OKLCh
38.8% 0.158 29.1°
CIELAB (D50)
27.4, 49.7, 40.6
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 91.9; on black, Lc -10.5. 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 32.7 and 35.4 and 38.4 — no red cone.
Text on this colour
White text
10.49:1 — passes AA
Black text
2.00:1 — fails AA
White text is the better of the two at10.49:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#850101
protanopia
#2d2d04 · ΔE00 32.7
deuteranopia
#4a4a00 · ΔE00 35.4
tritanopia
#606000 · ΔE00 38.4
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDark Red at ΔE00 0.235: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Dark RedΔE00 0.235 · #840000
- ChanticleerΔE00 0.459 · #870000
- Proton RedΔE00 0.501 · #840804
- SalamiΔE00 0.621 · #820000
- Glass BullΔE00 0.659 · #880000
- Indian RedΔE00 0.988 · #850e04
- MaroonΔE00 1.034 · #800000
- Blood OmenΔE00 1.037 · #8a0303
- Scab RedΔE00 1.271 · #8b0000
- Roasted PepperΔE00 1.403 · #890a01
- Red ReignΔE00 1.471 · #800707
- Kiss of a VampireΔE00 1.643 · #8a0009
5 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.