#51510D
Closest named color: Green Brown (#544E03). oklch(42.2% 0.085 109.6), rgb(81, 81, 13).
Aa
White text reads best on this color (8.29:1).
About this color
#51510D is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.085 and its hue 110°. Its hue sits on the warm side of the wheel. The nearest named color is Green Brown (#544E03), ΔE 0.009 away. White text reads best on it, at 8.29:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Green Brown (#544E03) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #51510D |
| RGB | rgb(81, 81, 13) |
| HSL | hsl(60, 72%, 18%) |
| OKLCH | oklch(42.2% 0.085 109.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #51510D | 8.29:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #51510D | 2.53:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #51510D text on white | 8.29:1 | AAA | Lc 88.5 | Fine for body text |
| #51510D text on black | 2.53:1 | Fails | Lc -13.6 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F6F6F1
oklch(97.2% 0.007 106.5)
-
Step 100
100
#EAEBE0
oklch(93.6% 0.015 110.9)
-
Step 200
200
#DADBC6
oklch(88.5% 0.028 109.2)
-
Step 300
300
#C2C49F
oklch(80.9% 0.05 110)
-
Step 400
400
#A4A56A
oklch(70.7% 0.079 109.1)
-
Step 500
500
#8E8F40
oklch(63.2% 0.102 109.7)
-
Step 600
600
#78781B
oklch(55.5% 0.11 109.5)
-
Step 700
700
#65650B
oklch(49.1% 0.103 109.7)
-
Step 800
800 (this color)
#51510D
oklch(42.2% 0.085 109.6)
-
Step 900
900
#444416
oklch(37.6% 0.066 109.2)
-
Step 950
950
#28280E
oklch(27% 0.042 108.9)
#51510D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #584D00 | 0.015 |
| Deuteranopia (no green cones) | #594F13 | 0.016 |
| Tritanopia (no blue cones) | #574B44 | 0.076 |
| Achromatopsia (no color) | #4E4E4E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51510D
#51510D
oklch(42.2% 0.085 109.6)
- #4D4579
#4D4579
oklch(42.3% 0.085 289.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #51510D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Brown #544E03 ΔE 0.009
- Olive Brown #645403 ΔE 0.034
- Army Green #4B5D16 ΔE 0.036
- Mud Brown #60460F ΔE 0.041
- Navy Green #35530A ΔE 0.042
- Camouflage Green #4B6113 ΔE 0.048
- Pine #2B5D34 ΔE 0.057
- Camo Green #526525 ΔE 0.059
Use #51510D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.