Sea Foam

#87e0cf

A cyan that is muted. It is very light — it works as a page background, not as text.

Hex

#87e0cf

RGB

135, 224, 207

OKLCh

84.6% 0.090 180.4°

CIELAB (D50)

83.2, -30.9, -0.5

What is true of this colour, and of no other

  • 4 other named colours sit within ΔE00 2 of it.
  • It uses 59% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 25.0; on black, Lc -78.1. 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 21.3 and 23.5 and 30.4 — no red cone.

Text on this colour

White text

1.54:1 — fails AA

Black text

13.59:1 — passes AA

Black text is the better of the two at13.59:1. That is enough for body text.

As text on white, it needs to change

#258576 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

#87e0cf

protanopia

#d8d8cf · ΔE00 21.3

deuteranopia

#cbcbd1 · ΔE00 23.5

tritanopia

#bbbbff · ΔE00 30.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isOpulent Turquoise at ΔE00 0.774: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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