HueComb

Scarlet Splendour

#cc0c1b

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

Hex

#cc0c1b

RGB

204, 12, 27

OKLCh

53.5% 0.213 26.7°

CIELAB (D50)

43.9, 67.4, 48.9

What is true of this colour, and of no other

  • 27 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 98% 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 76.4; on black, Lc -25.3. 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 39.4 and 44.6 and 49.3 — no red cone.

Text on this colour

White text

5.78:1 — passes AA

Black text

3.64:1 — large text only

White text is the better of the two at5.78:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#cc0c1b

protanopia

#4b4b1f · ΔE00 39.4

deuteranopia

#757500 · ΔE00 44.6

tritanopia

#959500 · ΔE00 49.3

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRe-Entry Red at ΔE00 0.667: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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