HueComb

Parmesan

#ffffdd

A yellow that is nearly neutral — the hue shows only against a true grey. It is very light — it works as a page background, not as text.

Hex

#ffffdd

RGB

255, 255, 221

OKLCh

99.1% 0.044 107.2°

CIELAB (D50)

99.3, -4.1, 16.3

What is true of this colour, and of no other

  • 20 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 -106.4. 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

1.02:1 — fails AA

Black text

20.60:1 — passes AA

Black text is the better of the two at20.60:1. That is enough for body text.

As text on white, it needs to change

#79785a 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

#ffffdd

protanopia

#ffffdd · ΔE00 0.0

deuteranopia

#ffffdd · ΔE00 0.0

tritanopia

#ffffdd · ΔE00 0.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isGood Morning at ΔE00 0.6: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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