HueComb

Firefly Glow

#fff3a1

A yellow that is muted. It is very light — it works as a page background, not as text.

Hex

#fff3a1

RGB

255, 243, 161

OKLCh

95.5% 0.103 100.9°

CIELAB (D50)

95.4, -4.3, 41.1

What is true of this colour, and of no other

  • 17 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
  • 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 0.0; on black, Lc -98.7. 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.
  • tritanopia shifts it by ΔE00 11.5 — no blue cone.

Text on this colour

White text

1.13:1 — fails AA

Black text

18.59:1 — passes AA

Black text is the better of the two at18.59:1. That is enough for body text.

As text on white, it needs to change

#847824 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

#fff3a1

protanopia

#f4f4a1 · ΔE00 3.4

deuteranopia

#f7f7a1 · ΔE00 3.4

tritanopia

#f9f93b · ΔE00 11.5

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSun Surprise at ΔE00 0.33: 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.