Dazzling Red

#d82c0d

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

Hex

#d82c0d

RGB

216, 44, 13

OKLCh

57.2% 0.210 31.9°

CIELAB (D50)

48.4, 64.8, 58.6

What is true of this colour, and of no other

  • 9 other named colours sit within ΔE00 2 of it.
  • It uses 97% 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 72.1; on black, Lc -29.5. 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 39.9 and 42.4 and 46.4 — no red cone.

Text on this colour

White text

4.90:1 — passes AA

Black text

4.29:1 — large text only

White text is the better of the two at4.90:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#d82c0d

protanopia

#595913 · ΔE00 39.9

deuteranopia

#818100 · ΔE00 42.4

tritanopia

#a0a000 · ΔE00 46.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRun Lola Run at ΔE00 0.938: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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