HueComb

Heroic Red

#d1191c

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

Hex

#d1191c

RGB

209, 25, 28

OKLCh

54.9% 0.213 27.6°

CIELAB (D50)

45.6, 67.1, 50.2

What is true of this colour, and of no other

  • 19 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 95% 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 74.9; on black, Lc -26.8. 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 39.7 and 44.5 and 49.0 — no red cone.

Text on this colour

White text

5.43:1 — passes AA

Black text

3.87:1 — large text only

White text is the better of the two at5.43:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#d1191c

protanopia

#505020 · ΔE00 39.7

deuteranopia

#7a7a00 · ΔE00 44.5

tritanopia

#999900 · ΔE00 49.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isLight Shōrei Red at ΔE00 0.799: 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.