HueComb

Knockout

#c42b2d

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

Hex

#c42b2d

RGB

196, 43, 45

OKLCh

53.8% 0.189 25.8°

CIELAB (D50)

44.5, 59.7, 38.9

What is true of this colour, and of no other

  • 10 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 87% 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 76.6; on black, Lc -25.2. 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 36.4 and 42.1 and 47.9 — no red cone.

Text on this colour

White text

5.63:1 — passes AA

Black text

3.73:1 — large text only

White text is the better of the two at5.63:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#c42b2d

protanopia

#52522f · ΔE00 36.4

deuteranopia

#757520 · ΔE00 42.1

tritanopia

#919100 · ΔE00 47.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAkabeni at ΔE00 0.613: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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