HueComb

Widowmaker

#99aaff

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

Hex

#99aaff

RGB

153, 170, 255

OKLCh

75.9% 0.124 274.5°

CIELAB (D50)

70.8, 9.7, -44.6

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • 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 43.2; on black, Lc -59.0. 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

2.20:1 — fails AA

Black text

9.55:1 — passes AA

Black text is the better of the two at9.55:1. That is enough for body text.

As text on white, it needs to change

#6371c1 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

#99aaff

protanopia

#a8a8ff · ΔE00 4.3

deuteranopia

#a5a5ff · ΔE00 4.0

tritanopia

#a2a2ff · ΔE00 4.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWondrous Wisteria at ΔE00 3.419: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. 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.