Rare Blue
#0044ff
A blue that is about as vivid as sRGB can show at this lightness. It is mid — the hardest range to put text on, either colour struggles.
Hex
#0044ff
RGB
0, 68, 255
OKLCh
50.7% 0.277 263.7°
CIELAB (D50)
38.2, 44.1, -97.6
What is true of this colour, and of no other
- 3 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 80.2; on black, Lc -21.6. 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.
- tritanopia shifts it by ΔE00 5.3 — no blue cone.
Text on this colour
White text
6.42:1 — passes AA
Black text
3.27:1 — large text only
White text is the better of the two at6.42:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#0044ff
protanopia
#4040ff · ΔE00 3.7
deuteranopia
#3939ff · ΔE00 4.1
tritanopia
#3030ff · ΔE00 5.3
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMagic Ink at ΔE00 0.788: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Magic InkΔE00 0.788 · #0247fe
- BlueshiftΔE00 1.824 · #2d47ff
- Scuff BlueΔE00 1.889 · #0044ee
- C64 BlueΔE00 2.509 · #003aff
- Bright GreekΔE00 2.56 · #3844f4
- Vibrant BlueΔE00 3.041 · #0339f8
- Merchant Marine BlueΔE00 3.58 · #0343df
- Pretentious PeacockΔE00 3.867 · #4444ff
- Blue et une NuitΔE00 3.958 · #0652ff
- Blinking BlueΔE00 4.073 · #0033ff
- Nightly EscapadeΔE00 4.084 · #0433ff
- Palatinate BlueΔE00 4.308 · #273be2
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.