Hidden Sea Glass

#6fd1c9

A cyan that is muted. It is light — black text sits on it comfortably, white text does not.

Hex

#6fd1c9

RGB

111, 209, 201

OKLCh

79.9% 0.093 188.5°

CIELAB (D50)

77.7, -31.7, -5.5

What is true of this colour, and of no other

  • 2 other named colours sit within ΔE00 2 of it.
  • It uses 67% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 33.3; on black, Lc -69.3. 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 22.3 and 25.1 and 30.7 — no red cone.

Text on this colour

White text

1.80:1 — fails AA

Black text

11.64:1 — passes AA

Black text is the better of the two at11.64:1. That is enough for body text.

As text on white, it needs to change

#10857e 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

#6fd1c9

protanopia

#c9c9c9 · ΔE00 22.3

deuteranopia

#bbbbcb · ΔE00 25.1

tritanopia

#aaaaff · ΔE00 30.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSkylar at ΔE00 1.711: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • SkylarΔE00 1.711 · #6bccc1
  • Turkish TealΔE00 1.924 · #72cac1
  • Water WingsΔE00 2.063 · #80d5cc
  • Isle RoyaleΔE00 2.201 · #80d7cf
  • Nile StoneΔE00 2.286 · #61c9c1
  • Dip in the PoolΔE00 2.289 · #68cfc1
  • Island SeaΔE00 2.339 · #81d7d0
  • CyantificΔE00 2.417 · #77c9c2
  • Blue Green GemΔE00 2.504 · #7ccbc5
  • Water WonderΔE00 2.513 · #80d4d0
  • BaysideΔE00 2.533 · #5fc9bf
  • Setting SailΔE00 2.564 · #5ccbc7

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