Secret Passage
#372a05
A yellow that is nearly neutral — the hue shows only against a true grey. It is dark — it carries white text and needs care with black.
Hex
#372a05
RGB
55, 42, 5
OKLCh
29.2% 0.055 88.5°
CIELAB (D50)
18.0, 3.0, 23.8
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 uses 92% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
- As text on white it measures APCA Lc 100.6; 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 7.1 and 7.1 and 7.3 — no red cone.
Text on this colour
White text
14.04:1 — passes AA
Black text
1.50:1 — fails AA
White text is the better of the two at14.04:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#372a05
protanopia
#2c2c05 · ΔE00 7.1
deuteranopia
#2e2e04 · ΔE00 7.1
tritanopia
#313100 · ΔE00 7.3
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isHidden Passage at ΔE00 2.567: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Hidden PassageΔE00 2.567 · #3c3005
- Brown TumbleweedΔE00 2.603 · #37290e
- Black SwanΔE00 3.705 · #332200
- Night in the WoodsΔE00 4.599 · #443300
- Swamp of SorrowsΔE00 4.72 · #36310d
- Pullman GreenΔE00 5.162 · #3b331c
- Lebanon CedarΔE00 5.858 · #3c341f
- LeChuck’s BeardΔE00 6.042 · #3c351f
- Lisbon BrownΔE00 6.096 · #423921
- MikadoΔE00 6.666 · #3f3623
- Avocado StoneΔE00 6.872 · #4e3e1f
- Vanilla Bean BrownΔE00 6.96 · #362c1d
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.