Truffle Trouble

#a35139

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

Hex

#a35139

RGB

163, 81, 57

OKLCh

53.1% 0.115 37.1°

CIELAB (D50)

44.7, 33.2, 30.3

What is true of this colour, and of no other

  • 6 other named colours sit within ΔE00 2 of it.
  • It uses 65% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 77.2; on black, Lc -24.5. 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 27.0 and 29.2 and 34.8 — no red cone.

Text on this colour

White text

5.54:1 — passes AA

Black text

3.79:1 — large text only

White text is the better of the two at5.54:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#a35139

protanopia

#5f5f3a · ΔE00 27.0

deuteranopia

#717134 · ΔE00 29.2

tritanopia

#828200 · ΔE00 34.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isTexas Heatwave at ΔE00 0.974: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Texas HeatwaveΔE00 0.974 · #a54e37
  • Ancient CopperΔE00 1.428 · #9f543e
  • Sun’s RageΔE00 1.552 · #a94e37
  • Suzume BrownΔE00 1.604 · #aa4f37
  • Redridge BrownΔE00 1.756 · #9d4e34
  • Kalahari SunsetΔE00 1.845 · #9f5440
  • Pico EarthΔE00 2.072 · #ab5236
  • Orange RoughyΔE00 2.117 · #a85335
  • Persimmon VarnishΔE00 2.254 · #9f563a
  • Sōdenkaracha BrownΔE00 2.291 · #9b533f
  • PicanteΔE00 2.31 · #a04933
  • Canyon WallΔE00 2.443 · #a14935

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