Lost in Heaven

#002489

A blue that is saturated. It is dark — it carries white text and needs care with black.

Hex

#002489

RGB

0, 36, 137

OKLCh

32.6% 0.170 263.3°

CIELAB (D50)

19.1, 25.2, -59.9

What is true of this colour, and of no other

  • 7 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 98.1; on black, Lc 0.0. 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.
  • All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.

Text on this colour

White text

13.01:1 — passes AA

Black text

1.61:1 — fails AA

White text is the better of the two at13.01:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#002489

protanopia

#222289 · ΔE00 3.3

deuteranopia

#1d1d89 · ΔE00 3.6

tritanopia

#181896 · ΔE00 4.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlue Lust at ΔE00 0.344: below 1.0 — an ordinary observer cannot tell these apart, even side by side. 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.