Glacier
#78b1bf
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
#78b1bf
RGB
120, 177, 191
OKLCh
72.6% 0.063 214.8°
CIELAB (D50)
68.6, -16.6, -13.4
What is true of this colour, and of no other
- 7 other named colours sit within ΔE00 2 of it.
- It uses 49% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 46.8; on black, Lc -55.3. 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 19.5 and 20.3 and 20.6 — no red cone.
Text on this colour
White text
2.38:1 — fails AA
Black text
8.84:1 — passes AA
Black text is the better of the two at8.84:1. That is enough for body text.
As text on white, it needs to change
#477f8c is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.
The same colour, with one cone missing
As you see it
#78b1bf
protanopia
#acacbf · ΔE00 19.5
deuteranopia
#a3a3c0 · ΔE00 20.3
tritanopia
#9898ff · ΔE00 20.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlue Eye Samurai at ΔE00 0.94: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Blue Eye SamuraiΔE00 0.94 · #75aebd
- Watson LakeΔE00 1.281 · #74aeba
- FlotationΔE00 1.489 · #7bb0ba
- Water MusicΔE00 1.515 · #6fb0be
- November SkiesΔE00 1.635 · #7cafb9
- Tennis BlueΔE00 1.64 · #7cb5c6
- Culinary BlueΔE00 1.853 · #7bb6c1
- Riverside BlueΔE00 2.355 · #6cb4c3
- HeavenlyΔE00 2.485 · #7eb2c5
- SnowboardΔE00 2.503 · #74a9b9
- Open SeasΔE00 2.587 · #83afbc
- Tropez BlueΔE00 2.769 · #73b7c2
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.