Hammam Blue

#65dcd6

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

Hex

#65dcd6

RGB

101, 220, 214

OKLCh

82.5% 0.107 190.8°

CIELAB (D50)

80.9, -36.1, -7.8

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • It uses 76% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 28.4; on black, Lc -74.5. 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 24.4 and 26.2 and 31.1 — no red cone.

Text on this colour

White text

1.65:1 — fails AA

Black text

12.76:1 — passes AA

Black text is the better of the two at12.76:1. That is enough for body text.

As text on white, it needs to change

#008581 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

#65dcd6

protanopia

#d3d3d6 · ΔE00 24.4

deuteranopia

#c3c3d8 · ΔE00 26.2

tritanopia

#afafff · ΔE00 31.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPluviophile at ΔE00 2.093: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.

  • PluviophileΔE00 2.093 · #66dddd
  • Near MoonΔE00 2.657 · #5ee7df
  • Aqua ZingΔE00 3.027 · #7cd8d6
  • Hidden Sea GlassΔE00 3.045 · #6fd1c9
  • Turquoise ChalkΔE00 3.15 · #6fe7db
  • Medium TurquoiseΔE00 3.249 · #48d1cc
  • Isle RoyaleΔE00 3.313 · #80d7cf
  • Island SeaΔE00 3.36 · #81d7d0
  • Andes SkyΔE00 3.403 · #78d8d9
  • Blue Crystal LandscapeΔE00 3.422 · #6febe3
  • Water WingsΔE00 3.729 · #80d5cc
  • Water WonderΔE00 3.763 · #80d4d0

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