Chicken Comb

#dd2222

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

Hex

#dd2222

RGB

221, 34, 34

OKLCh

57.6% 0.219 27.6°

CIELAB (D50)

48.7, 68.7, 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 uses 93% 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 71.6; on black, Lc -30.1. 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 40.5 and 45.6 and 49.9 — no red cone.

Text on this colour

White text

4.85:1 — passes AA

Black text

4.33:1 — large text only

White text is the better of the two at4.85:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#dd2222

protanopia

#575725 · ΔE00 40.5

deuteranopia

#828201 · ΔE00 45.6

tritanopia

#a3a300 · ΔE00 49.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMaximum Red at ΔE00 0.916: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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