HueComb

Out of the Blue

#1199ee

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

Hex

#1199ee

RGB

17, 153, 238

OKLCh

66.0% 0.163 245.1°

CIELAB (D50)

60.0, -9.9, -52.8

What is true of this colour, and of no other

  • 2 other named colours sit within ΔE00 2 of it.
  • It uses 98% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
  • As text on white it measures APCA Lc 57.1; on black, Lc -44.7. 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 19.8 and 19.4 and 20.2 — no red cone.

Text on this colour

White text

3.08:1 — large text only

Black text

6.81:1 — passes AA

Black text is the better of the two at6.81:1. That is enough for body text.

As text on white, it needs to change

#007cc4 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.

Try it against your own background

The same colour, with one cone missing

As you see it

#1199ee

protanopia

#9191ee · ΔE00 19.8

deuteranopia

#8383ef · ΔE00 19.4

tritanopia

#7171ff · ΔE00 20.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPervenche at ΔE00 0.351: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • PervencheΔE00 0.351 · #0099ee
  • Fresh Blue of Bel AirΔE00 0.59 · #069af3
  • Karimun BlueΔE00 2.019 · #2196f3
  • Sky of MagritteΔE00 2.261 · #0099ff
  • Button BlueΔE00 2.467 · #24a0ed
  • Blue NebulaΔE00 2.478 · #1199ff
  • Flax Flower BlueΔE00 2.599 · #4499dd
  • HomeworldΔE00 2.731 · #2299dd
  • Starfleet BlueΔE00 2.804 · #0096ff
  • Rockman BlueΔE00 2.927 · #31a2f2
  • Perfect DaysΔE00 3.349 · #49a0e7
  • AtmosphereΔE00 3.467 · #0099dd

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