HueComb

Skies of Cyberspace

#4477dd

A blue that is saturated. It is mid — the hardest range to put text on, either colour struggles.

Hex

#4477dd

RGB

68, 119, 221

OKLCh

58.7% 0.165 262.5°

CIELAB (D50)

50.6, 8.9, -58.3

What is true of this colour, and of no other

  • One other named colour sits within ΔE00 2 of it.
  • It uses 73% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 69.1; on black, Lc -32.6. 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.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 9.8 and 9.6 and 10.1 — no red cone.

Text on this colour

White text

4.26:1 — large text only

Black text

4.93:1 — passes AA

Black text is the better of the two at4.93:1. That is enough for body text.

As text on white, it needs to change

#4073d9 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#4477dd

protanopia

#7373dd · ΔE00 9.8

deuteranopia

#6b6bdd · ΔE00 9.6

tritanopia

#6262ff · ΔE00 10.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSerenity’s Reign at ΔE00 1.922: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.