HueComb

Martian Colony

#e5750f

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

Hex

#e5750f

RGB

229, 117, 15

OKLCh

67.9% 0.168 53.3°

CIELAB (D50)

61.8, 40.7, 66.8

What is true of this colour, and of no other

  • 8 other named colours sit within ΔE00 2 of it.
  • It uses 98% 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 56.7; on black, Lc -45.0. 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 30.5 and 31.3 and 33.2 — no red cone.

Text on this colour

White text

3.05:1 — large text only

Black text

6.88:1 — passes AA

Black text is the better of the two at6.88:1. That is enough for body text.

As text on white, it needs to change

#bb5d00 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.

Try it against your own background

The same colour, with one cone missing

As you see it

#e5750f

protanopia

#888814 · ΔE00 30.5

deuteranopia

#a1a100 · ΔE00 31.3

tritanopia

#b8b800 · ΔE00 33.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isThai Mango at ΔE00 0.809: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Thai MangoΔE00 0.809 · #e77200
  • Therapeutic ToucanΔE00 1.774 · #ee7711
  • Mee-hua SunsetΔE00 1.794 · #ee7700
  • Cherokee DignityΔE00 1.816 · #dd7722
  • Pumpkin SoupΔE00 1.877 · #e17701
  • Manticore WingΔE00 1.916 · #dd7711
  • Supernatural SaffronΔE00 1.918 · #ef760e
  • ClementineΔE00 1.957 · #e96e00
  • Accent OrangeΔE00 2.023 · #e56d00
  • Gold OrangeΔE00 2.03 · #db7210
  • First of FallΔE00 2.053 · #e47901
  • Pumpkin CatΔE00 2.183 · #eb7b07

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