Electric Indigo
#6600ff
A violet 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
#6600ff
RGB
102, 0, 255
OKLCh
50.4% 0.294 285.4°
CIELAB (D50)
36.0, 72.2, -101.1
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 81.4; on black, Lc -20.5. 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 6.6 and 7.7 and 11.1 — no red cone.
Text on this colour
White text
6.98:1 — passes AA
Black text
3.01:1 — large text only
White text is the better of the two at6.98:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#6600ff
protanopia
#2121ff · ΔE00 6.6
deuteranopia
#3838ff · ΔE00 7.7
tritanopia
#4848cb · ΔE00 11.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBright Indigo at ΔE00 1.259: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Bright IndigoΔE00 1.259 · #6f00fe
- Akihabara ArcadeΔE00 1.782 · #601ef9
- Purple BlueΔE00 1.809 · #661aee
- Radiant FeatherΔE00 2.136 · #5500ff
- Wèi Lán AzureΔE00 2.516 · #5a06ef
- Han PurpleΔE00 2.669 · #5218fa
- Gonzo VioletΔE00 2.886 · #5d06e9
- Tezcatlipōca BlueΔE00 3.222 · #5500ee
- Yíng Guāng Sè PurpleΔE00 3.544 · #632de9
- Almost RoyalΔE00 3.552 · #6a2ded
- Violent VioletΔE00 3.731 · #7f00ff
- Poisoning PurpleΔE00 3.74 · #7f01fe
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.