Blustering Blue
#4411ff
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
#4411ff
RGB
68, 17, 255
OKLCh
48.2% 0.296 274.7°
CIELAB (D50)
33.5, 67.4, -105.4
What is true of this colour, and of no other
- 7 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 83.9; on black, Lc -18.1. 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.
- All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.
Text on this colour
White text
7.58:1 — passes AA
Black text
2.77:1 — fails AA
White text is the better of the two at7.58:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#4411ff
protanopia
#1c1cff · ΔE00 2.8
deuteranopia
#2828ff · ΔE00 3.4
tritanopia
#3232ed · ΔE00 4.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isOverdue Blue at ΔE00 0.978: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Overdue BlueΔE00 0.978 · #4400ff
- Electric UltramarineΔE00 1.138 · #3f00ff
- Han PurpleΔE00 1.509 · #5218fa
- Nimbus BlueΔE00 1.756 · #4422ff
- Radiant FeatherΔE00 1.883 · #5500ff
- Violet GlowΔE00 1.9 · #4422ee
- Royal Hunter BlueΔE00 1.969 · #4411ee
- Poseidon’s TerritoryΔE00 2.672 · #4400ee
- Blue PencilΔE00 2.703 · #2200ff
- Delft BlueΔE00 2.764 · #3311ee
- Tezcatlipōca BlueΔE00 2.895 · #5500ee
- Wèi Lán AzureΔE00 3.005 · #5a06ef
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.