#51571E
Closest named color: Army Green (#4B5D16). oklch(43.9% 0.079 114.8), rgb(81, 87, 30).
Aa
White text reads best on this color (7.68:1).
About this color
#51571E is a dark, moderately saturated brown. In OKLCH its lightness is 44%, its chroma 0.079 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Army Green (#4B5D16), ΔE 0.023 away. White text reads best on it, at 7.68:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.079) |
| Temperature | in between |
| Nearest name | Army Green (#4B5D16) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #51571E |
| RGB | rgb(81, 87, 30) |
| HSL | hsl(66, 49%, 23%) |
| OKLCH | oklch(43.9% 0.079 114.8) |
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 #51571E | 7.68:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #51571E | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #51571E text on white | 7.68:1 | AAA | Lc 86.6 | Fine for body text |
| #51571E text on black | 2.73:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D8DBC8
oklch(88.4% 0.026 114.2)
-
Step 300
300
#BFC5A3
oklch(81% 0.047 115.6)
-
Step 400
400
#9FA670
oklch(70.6% 0.074 114.3)
-
Step 500
500
#88904A
oklch(63.1% 0.094 114.5)
-
Step 600
600
#727A2B
oklch(55.6% 0.103 114.7)
-
Step 700
700
#5F671D
oklch(49.2% 0.096 115.3)
-
Step 800
800 (this color)
#51571E
oklch(43.9% 0.079 114.8)
-
Step 900
900
#41451C
oklch(37.6% 0.061 114)
-
Step 950
950
#262911
oklch(27.1% 0.04 115)
#51571E 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) | #5D5317 | 0.021 |
| Deuteranopia (no green cones) | #5D5422 | 0.023 |
| Tritanopia (no blue cones) | #56524B | 0.069 |
| Achromatopsia (no color) | #535353 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51571E
#51571E
oklch(43.9% 0.079 114.8)
- #554979
#554979
oklch(43.9% 0.078 294.4)
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 #51571E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Army Green #4B5D16 ΔE 0.023
- Green Brown #544E03 ΔE 0.028
- Olive Brown #645403 ΔE 0.032
- Camouflage Green #4B6113 ΔE 0.036
- Camo Green #526525 ΔE 0.042
- Pine #2B5D34 ΔE 0.048
- Navy Green #35530A ΔE 0.049
- Greeny Brown #696006 ΔE 0.052
Use #51571E 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.