Bleu Ciel
#007ba1
A cyan that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#007ba1
RGB
0, 123, 161
OKLCh
54.5% 0.107 228.5°
CIELAB (D50)
47.4, -18.9, -29.1
What is true of this colour, and of no other
- 8 other named colours sit within ΔE00 2 of it.
- It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
- As text on white it measures APCA Lc 72.9; on black, Lc -28.8. 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 21.7 and 21.0 and 20.6 — no red cone.
Text on this colour
White text
4.83:1 — passes AA
Black text
4.35:1 — large text only
White text is the better of the two at4.83:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#007ba1
protanopia
#7474a1 · ΔE00 21.7
deuteranopia
#6969a2 · ΔE00 21.0
tritanopia
#5959fa · ΔE00 20.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMitchell Blue at ΔE00 1.265: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Mitchell BlueΔE00 1.265 · #0d789f
- Sea SightΔE00 1.402 · #00789b
- CG BlueΔE00 1.577 · #007aa5
- Kingfisher SheenΔE00 1.792 · #007fa2
- Celadon BlueΔE00 1.801 · #007ba7
- Pristine SeasΔE00 1.871 · #007799
- Quiet CoveΔE00 1.877 · #017aa6
- Turkish TileΔE00 1.981 · #007e9f
- Advertising BlueΔE00 2.221 · #0081a8
- BateauΔE00 2.313 · #1b7598
- Oh so VoΔE00 2.326 · #0180ab
- Summer BlueΔE00 2.38 · #1880a1
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.