Epic Blue

#0066ee

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

#0066ee

RGB

0, 102, 238

OKLCh

54.9% 0.220 259.7°

CIELAB (D50)

45.2, 18.3, -76.6

What is true of this colour, and of no other

  • 4 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 74.1; on black, Lc -27.6. 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 10.0 and 10.2 and 11.7 — no red cone.

Text on this colour

White text

5.08:1 — passes AA

Black text

4.14:1 — large text only

White text is the better of the two at5.08:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#0066ee

protanopia

#6060ee · ΔE00 10.0

deuteranopia

#5656ee · ΔE00 10.2

tritanopia

#4949ff · ΔE00 11.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isOld Gungeon Red at ΔE00 1.066: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Old Gungeon RedΔE00 1.066 · #0063ec
  • Bright BlueΔE00 1.613 · #0165fc
  • Blue RibbonΔE00 1.884 · #0066ff
  • Blue RuinΔE00 1.891 · #0066dd
  • Heroic BlueΔE00 2.199 · #1166ff
  • Flickr BlueΔE00 2.416 · #216bd6
  • BluerocraticΔE00 2.701 · #1f66ff
  • Enchanting SapphireΔE00 2.732 · #276dd6
  • Níu Zǎi Sè DenimΔE00 2.821 · #056eee
  • JanitorΔE00 2.915 · #2266cc
  • KyaniteΔE00 2.932 · #1560fb
  • Celtic BlueΔE00 2.985 · #246bce

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