Kelp
#4d503c
A yellow that is nearly neutral — the hue shows only against a true grey. It is mid — the hardest range to put text on, either colour struggles.
Hex
#4d503c
RGB
77, 80, 60
OKLCh
42.3% 0.032 114.7°
CIELAB (D50)
33.3, -4.2, 11.4
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 only 33% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
- As text on white it measures APCA Lc 88.7; on black, Lc -13.5. 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 6.0 — no blue cone.
Text on this colour
White text
8.31:1 — passes AA
Black text
2.53:1 — fails AA
White text is the better of the two at8.31:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#4d503c
protanopia
#50503c · ΔE00 1.7
deuteranopia
#4f4f3c · ΔE00 1.7
tritanopia
#4f4f47 · ΔE00 6.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFreshwater Marsh at ΔE00 2.296: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Freshwater MarshΔE00 2.296 · #535644
- Lunar GreenΔE00 2.523 · #4e5541
- Amazon DepthsΔE00 2.706 · #505338
- Castle StoneΔE00 2.899 · #525746
- Treasure IslandΔE00 3.33 · #47493b
- Sooty Willow BambooΔE00 3.428 · #4d4b3a
- WaiouruΔE00 3.459 · #4c4e31
- Broccoli GreenΔE00 3.466 · #4b5338
- Deep DepthsΔE00 3.49 · #545648
- Lone PineΔE00 3.513 · #575a44
- Duffel BagΔE00 3.549 · #464e3f
- ForestwoodΔE00 3.58 · #4d5346
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.