Heavenly Sky
#6b90b3
A blue 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
#6b90b3
RGB
107, 144, 179
OKLCh
63.9% 0.067 247.5°
CIELAB (D50)
58.0, -6.3, -22.8
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses only 39% 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 60.9; on black, Lc -40.8. 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 13.2 and 12.5 and 9.2 — no red cone.
Text on this colour
White text
3.35:1 — large text only
Black text
6.27:1 — passes AA
Black text is the better of the two at6.27:1. That is enough for body text.
As text on white, it needs to change
#567a9c 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
#6b90b3
protanopia
#8c8cb3 · ΔE00 13.2
deuteranopia
#8686b4 · ΔE00 12.5
tritanopia
#7f7fed · ΔE00 9.2
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isGrant Village at ΔE00 0.289: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Grant VillageΔE00 0.289 · #6c90b2
- Genteel BlueΔE00 0.865 · #698eb3
- Hushed LilacΔE00 1.387 · #6e8fb4
- AllureΔE00 1.737 · #7291b4
- Distant SkyΔE00 1.914 · #6f8daf
- Blue DazzleΔE00 1.938 · #668db7
- Bluebird’s BellyΔE00 2.011 · #7395b8
- ScubaΔE00 2.084 · #6392b7
- ScandaΔE00 2.125 · #6b8ca9
- Pale FlowerΔE00 2.157 · #698aab
- Ocean RidgeΔE00 2.211 · #7594b3
- Blue MarbleΔE00 2.273 · #6594bc
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.