HueComb

Brick by Brick

#b22122

A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.

Hex

#b22122

RGB

178, 33, 34

OKLCh

49.6% 0.180 26.6°

CIELAB (D50)

39.7, 56.8, 39.1

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 uses 89% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
  • As text on white it measures APCA Lc 81.4; on black, Lc -20.5. 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 35.4 and 40.6 and 45.5 — no red cone.

Text on this colour

White text

6.70:1 — passes AA

Black text

3.13:1 — large text only

White text is the better of the two at6.70:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#b22122

protanopia

#474724 · ΔE00 35.4

deuteranopia

#696913 · ΔE00 40.6

tritanopia

#838300 · ΔE00 45.5

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFirebrick at ΔE00 0.153: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

6 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.