HueComb

Matt Demon

#dd4433

A red that is saturated. It is light — black text sits on it comfortably, white text does not.

Hex

#dd4433

RGB

221, 68, 51

OKLCh

60.5% 0.193 30.0°

CIELAB (D50)

52.3, 59.5, 45.3

What is true of this colour, and of no other

  • 12 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 79% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 68.1; on black, Lc -33.6. 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 37.8 and 42.2 and 47.2 — no red cone.

Text on this colour

White text

4.24:1 — large text only

Black text

4.95:1 — passes AA

Black text is the better of the two at4.95:1. That is enough for body text.

As text on white, it needs to change

#d83f2e is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#dd4433

protanopia

#666635 · ΔE00 37.8

deuteranopia

#8a8a25 · ΔE00 42.2

tritanopia

#a7a700 · ΔE00 47.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPunch at ΔE00 0.365: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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