HueComb

Blue Jay

#5588dd

A blue that is muted. It is light — black text sits on it comfortably, white text does not.

Hex

#5588dd

RGB

85, 136, 221

OKLCh

63.1% 0.140 260.1°

CIELAB (D50)

56.1, 2.6, -49.4

What is true of this colour, and of no other

  • 2 other named colours sit within ΔE00 2 of it.
  • It uses 70% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 62.6; on black, Lc -39.0. 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 11.2 and 10.8 and 10.6 — no red cone.

Text on this colour

White text

3.53:1 — large text only

Black text

5.95:1 — passes AA

Black text is the better of the two at5.95:1. That is enough for body text.

As text on white, it needs to change

#4476c9 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

#5588dd

protanopia

#8383dd · ΔE00 11.2

deuteranopia

#7c7cdd · ΔE00 10.8

tritanopia

#7272ff · ΔE00 10.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlue Elemental at ΔE00 1.547: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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