Emperor Jade

#007b75

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

Hex

#007b75

RGB

0, 123, 117

OKLCh

52.5% 0.091 188.8°

CIELAB (D50)

46.0, -31.0, -5.4

What is true of this colour, and of no other

  • 9 other named colours sit within ΔE00 2 of it.
  • It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
  • As text on white it measures APCA Lc 74.8; on black, Lc -26.9. 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 22.6 and 25.0 and 35.0 — no red cone.

Text on this colour

White text

5.13:1 — passes AA

Black text

4.09:1 — large text only

White text is the better of the two at5.13:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#007b75

protanopia

#747475 · ΔE00 22.6

deuteranopia

#696976 · ΔE00 25.0

tritanopia

#5959e4 · ΔE00 35.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWizards Orb at ΔE00 0.358: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Wizards OrbΔE00 0.358 · #007c76
  • Romantic IsleΔE00 0.518 · #007c75
  • Hydra TurquoiseΔE00 0.561 · #007a73
  • Surfie GreenΔE00 0.814 · #007b77
  • Navajo TurquoiseΔE00 0.911 · #007c78
  • Coelia GreenshadeΔE00 1.549 · #0e7f78
  • Mermaid HarbourΔE00 1.692 · #00776f
  • Pond MossΔE00 1.817 · #01796f
  • IvyΔE00 1.952 · #277b74
  • Buzzards BayΔE00 2.059 · #017a79
  • Autumn Pine GreenΔE00 2.073 · #158078
  • ElmΔE00 2.187 · #297b76

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