Castaway
#6dbac0
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
#6dbac0
RGB
109, 186, 192
OKLCh
74.2% 0.077 202.1°
CIELAB (D50)
70.7, -23.7, -10.9
What is true of this colour, and of no other
- 8 other named colours sit within ΔE00 2 of it.
- It uses 61% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 43.7; on black, Lc -58.4. 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 22.2 and 23.4 and 26.5 — no red cone.
Text on this colour
White text
2.23:1 — fails AA
Black text
9.43:1 — passes AA
Black text is the better of the two at9.43:1. That is enough for body text.
As text on white, it needs to change
#328288 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
#6dbac0
protanopia
#b3b3c0 · ΔE00 22.2
deuteranopia
#a8a8c1 · ΔE00 23.4
tritanopia
#9a9aff · ΔE00 26.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAqua Sky at ΔE00 0.812: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Aqua SkyΔE00 0.812 · #70bbbf
- Maritime Soft BlueΔE00 0.941 · #69b8c0
- Azul TurquesaΔE00 1.44 · #6abac4
- SurferΔE00 1.619 · #70b8ba
- Dickie BirdΔE00 1.629 · #60b8be
- Fresh Soft BlueΔE00 1.655 · #6ab9bb
- Pure TurquoiseΔE00 1.945 · #7abec2
- Luna MoonaΔE00 1.987 · #70c1c9
- SpearfishΔE00 2.001 · #5fb6bf
- AdonisΔE00 2.064 · #64b5bf
- Pharaoh’s SeasΔE00 2.358 · #59bbc2
- Tibetan StoneΔE00 2.395 · #74b7c1
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.