Neptune’s Realm
#97c0d1
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
#97c0d1
RGB
151, 192, 209
OKLCh
78.4% 0.050 225.2°
CIELAB (D50)
75.2, -11.2, -13.3
What is true of this colour, and of no other
- 8 other named colours sit within ΔE00 2 of it.
- It uses only 34% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
- As text on white it measures APCA Lc 37.4; on black, Lc -65.0. 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 15.8 and 16.6 and 15.5 — no red cone.
Text on this colour
White text
1.95:1 — fails AA
Black text
10.78:1 — passes AA
Black text is the better of the two at10.78:1. That is enough for body text.
As text on white, it needs to change
#557c8c 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
#97c0d1
protanopia
#bcbcd1 · ΔE00 15.8
deuteranopia
#b5b5d2 · ΔE00 16.6
tritanopia
#adadff · ΔE00 15.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isReef Blue at ΔE00 0.911: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Reef BlueΔE00 0.911 · #93bdcf
- JuneΔE00 1.107 · #9bc4d4
- SpeedboatΔE00 1.639 · #90bfd4
- Sky BusΔE00 1.65 · #99c1d6
- Bobby BlueΔE00 1.85 · #97c5da
- Sound WavesΔE00 1.876 · #a0c6d7
- Angel SolΔE00 1.884 · #9bc2d7
- Sydney HarbourΔE00 1.969 · #97bbc8
- Gift of the SeaΔE00 2.015 · #9fc0ce
- Eastern SkyΔE00 2.062 · #8fc1d2
- Corydalis BlueΔE00 2.217 · #a2c7d7
- AquaticΔE00 2.296 · #99c1cc
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.