Gold Tooth

#dbb40c

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

Hex

#dbb40c

RGB

219, 180, 12

OKLCh

78.2% 0.158 92.9°

CIELAB (D50)

75.1, 4.8, 75.2

What is true of this colour, and of no other

4 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 38.3; on black, Lc -64.1. 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 10.2 and 10.2 and 10.6 — no red cone.

Text on this colour

White text

1.99:1 — fails AA

Black text

10.55:1 — passes AA

Black text is the better of the two at10.55:1. That is enough for body text.

As text on white, it needs to change

#8f7400 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

#dbb40c

protanopia

#b9b90f · ΔE00 10.2

deuteranopia

#c0c000 · ΔE00 10.2

tritanopia

#c8c800 · ΔE00 10.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCrown of Liechtenstein at ΔE00 0.785: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Crown of LiechtensteinΔE00 0.785 · #d8b411
Patrinia FlowersΔE00 1.098 · #d9b611
Plague BrownΔE00 1.451 · #dfb900
Palomino GoldΔE00 1.905 · #daae00
Pickled PeppersΔE00 2.038 · #dbb532
Golden SchnitzelΔE00 2.118 · #ddbb11
LionheadΔE00 2.137 · #d5b60a
Eye CatchingΔE00 2.22 · #ddb835
Alu GobiΔE00 2.261 · #ddbb00
Golden FrameΔE00 2.336 · #e2b31b
BollywoodΔE00 2.34 · #debb32
Durian YellowΔE00 2.354 · #e1bd27

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