#51531B
Closest named color: Green Brown (#544E03). oklch(42.8% 0.077 111.2), rgb(81, 83, 27).
Aa
White text reads best on this color (8.06:1).
About this color
#51531B is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.077 and its hue 111°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Brown (#544E03), ΔE 0.018 away. White text reads best on it, at 8.06:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Green Brown (#544E03) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #51531B |
| RGB | rgb(81, 83, 27) |
| HSL | hsl(62, 51%, 22%) |
| OKLCH | oklch(42.8% 0.077 111.2) |
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 #51531B | 8.06:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #51531B | 2.60:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #51531B text on white | 8.06:1 | AAA | Lc 87.9 | Fine for body text |
| #51531B text on black | 2.60:1 | Fails | Lc -14.3 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#EAEBE1
oklch(93.7% 0.013 111.3)
-
Step 200
200
#D9DBC8
oklch(88.5% 0.026 111.8)
-
Step 300
300
#C1C4A3
oklch(80.9% 0.045 111.6)
-
Step 400
400
#A2A571
oklch(70.7% 0.071 110.9)
-
Step 500
500
#8C8F4A
oklch(63.2% 0.092 111)
-
Step 600
600
#76792B
oklch(55.7% 0.1 111.3)
-
Step 700
700
#63651D
oklch(49% 0.093 110.9)
-
Step 800
800 (this color)
#51531B
oklch(42.8% 0.077 111.2)
-
Step 900
900
#43451C
oklch(37.8% 0.061 111.5)
-
Step 950
950
#272811
oklch(26.9% 0.038 110.9)
#51531B 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) | #5A4F14 | 0.017 |
| Deuteranopia (no green cones) | #5A511F | 0.018 |
| Tritanopia (no blue cones) | #574E47 | 0.068 |
| Achromatopsia (no color) | #505050 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51531B
#51531B
oklch(42.8% 0.077 111.2)
- #504776
#504776
oklch(42.8% 0.077 291.6)
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 #51531B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Brown #544E03 ΔE 0.018
- Olive Brown #645403 ΔE 0.033
- Army Green #4B5D16 ΔE 0.033
- Mud Brown #60460F ΔE 0.043
- Camouflage Green #4B6113 ΔE 0.046
- Navy Green #35530A ΔE 0.046
- Pine #2B5D34 ΔE 0.052
- Camo Green #526525 ΔE 0.054
Use #51531B 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.