Heartwarming

#bf1818

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

Hex

#bf1818

RGB

191, 24, 24

OKLCh

51.4% 0.198 27.9°

CIELAB (D50)

41.7, 62.3, 47.3

What is true of this colour, and of no other

  • 17 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 94% 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 79.1; on black, Lc -22.7. 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 37.9 and 42.4 and 46.8 — no red cone.

Text on this colour

White text

6.25:1 — passes AA

Black text

3.36:1 — large text only

White text is the better of the two at6.25:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#bf1818

protanopia

#49491b · ΔE00 37.9

deuteranopia

#6f6f00 · ΔE00 42.4

tritanopia

#8c8c00 · ΔE00 46.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFurious Tomato at ΔE00 1.058: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. 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.