Atlas Cedar

#5ca0a7

A cyan that is nearly neutral — the hue shows only against a true grey. It is light — black text sits on it comfortably, white text does not.

Hex

#5ca0a7

RGB

92, 160, 167

OKLCh

66.3% 0.070 204.2°

CIELAB (D50)

61.6, -21.1, -10.8

What is true of this colour, and of no other

  • 6 other named colours sit within ΔE00 2 of it.
  • It uses 62% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 56.3; on black, Lc -45.5. 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 21.1 and 22.3 and 26.3 — no red cone.

Text on this colour

White text

2.98:1 — fails AA

Black text

7.04:1 — passes AA

Black text is the better of the two at7.04:1. That is enough for body text.

As text on white, it needs to change

#3c8188 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#5ca0a7

protanopia

#9a9aa7 · ΔE00 21.1

deuteranopia

#9090a8 · ΔE00 22.3

tritanopia

#8484ff · ΔE00 26.3

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAqua Sea at ΔE00 0.965: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Aqua SeaΔE00 0.965 · #61a1a9
  • Beach BlueΔE00 1.477 · #5f9ca2
  • HydroportΔE00 1.523 · #5e9ca1
  • MeadowbrookΔE00 1.58 · #60a0a3
  • Nirvana JewelΔE00 1.857 · #64a5ad
  • Echo OneΔE00 1.928 · #629da6
  • Bali BlissΔE00 2.059 · #5e9ea0
  • Cadet BlueΔE00 2.065 · #5f9ea0
  • Blue MercuryΔE00 2.217 · #67a6ac
  • Basilica BlueΔE00 2.258 · #4a9fa7
  • Tropical OasisΔE00 2.462 · #579aa5
  • RockpoolΔE00 2.472 · #519ea1

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