HueComb

Pool Table

#039578

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

Hex

#039578

RGB

3, 149, 120

OKLCh

59.7% 0.115 172.4°

CIELAB (D50)

54.8, -40.4, 5.5

What is true of this colour, and of no other

  • 3 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 64.6; on black, Lc -37.0. 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 22.1 and 23.2 and 41.9 — no red cone.

Text on this colour

White text

3.77:1 — large text only

Black text

5.57:1 — passes AA

Black text is the better of the two at5.57:1. That is enough for body text.

As text on white, it needs to change

#00876c 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

#039578

protanopia

#8d8d78 · ΔE00 22.1

deuteranopia

#7f7f7a · ΔE00 23.2

tritanopia

#6d6dff · ΔE00 41.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDòu Lǜ Green at ΔE00 1.046: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Dòu Lǜ GreenΔE00 1.046 · #009276
  • CadaverousΔE00 1.86 · #009977
  • Paolo Veronese GreenΔE00 1.98 · #009b7d
  • ObservatoryΔE00 2.289 · #008f70
  • Aqua WatersΔE00 2.324 · #00937d
  • Illuminating EmeraldΔE00 2.443 · #319177
  • Tropical KelpΔE00 2.668 · #009d7d
  • JardinièreΔE00 2.936 · #019a74
  • Reptilian GreenΔE00 3.055 · #009e82
  • Golf GreenΔE00 3.081 · #009b75
  • Sea SwellΔE00 3.251 · #018f6b
  • Green JellyΔE00 3.312 · #349b82

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