Brilliant Blue
#0075b3
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#0075b3
RGB
0, 117, 179
OKLCh
54.0% 0.130 242.7°
CIELAB (D50)
46.3, -10.2, -41.3
What is true of this colour, and of no other
- 10 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
- 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 74.0; on black, Lc -27.7. 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 18.2 and 17.7 and 17.5 — no red cone.
Text on this colour
White text
5.01:1 — passes AA
Black text
4.20:1 — large text only
White text is the better of the two at5.01:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#0075b3
protanopia
#6f6fb3 · ΔE00 18.2
deuteranopia
#6363b4 · ΔE00 17.7
tritanopia
#5555fd · ΔE00 17.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPost It at ΔE00 0.571: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Post ItΔE00 0.571 · #0074b4
- AmericanaΔE00 0.764 · #0477b4
- CloisonnéΔE00 0.798 · #0773af
- Biloxi BlueΔE00 1.009 · #0075b8
- Reef EscapeΔE00 1.071 · #0474ad
- Cobalt GlazeΔE00 1.532 · #0072b5
- Bumangués BlueΔE00 1.674 · #0777bc
- Deep RiverΔE00 1.779 · #0079b3
- Ocean Boat BlueΔE00 1.881 · #0077be
- Roller Coaster ChariotΔE00 1.899 · #0078be
- Peek-A-Boo BlueΔE00 2.097 · #0173bb
- Deep CeruleanΔE00 2.259 · #007bbb
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.