#515B37
Closest named color: Army Green (#4B5D16). oklch(45.3% 0.056 121.3), rgb(81, 91, 55).
Aa
White text reads best on this color (7.23:1).
About this color
#515B37 is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.056 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Army Green (#4B5D16), ΔE 0.041 away. White text reads best on it, at 7.23:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Army Green (#4B5D16) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #515B37 |
| RGB | rgb(81, 91, 55) |
| HSL | hsl(77, 25%, 29%) |
| OKLCH | oklch(45.3% 0.056 121.3) |
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 #515B37 | 7.23:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #515B37 | 2.90:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #515B37 text on white | 7.23:1 | AAA | Lc 85.1 | Fine for body text |
| #515B37 text on black | 2.90:1 | Fails | Lc -16.9 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE4
oklch(93.7% 0.01 119.6)
-
Step 200
200
#D7DBCE
oklch(88.5% 0.018 120.7)
-
Step 300
300
#BDC4AD
oklch(80.9% 0.032 120.9)
-
Step 400
400
#9BA682
oklch(70.7% 0.052 121.5)
-
Step 500
500
#839062
oklch(63.1% 0.067 121.2)
-
Step 600
600
#6D7A49
oklch(55.6% 0.072 120.9)
-
Step 700
700
#5B673A
oklch(49.2% 0.068 121.1)
-
Step 800
800 (this color)
#515B37
oklch(45.3% 0.056 121.3)
-
Step 900
900
#3E452B
oklch(37.6% 0.043 120.7)
-
Step 950
950
#242919
oklch(27.1% 0.029 122.4)
#515B37 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) | #5F5734 | 0.024 |
| Deuteranopia (no green cones) | #5E5739 | 0.024 |
| Tritanopia (no blue cones) | #545852 | 0.046 |
| Achromatopsia (no color) | #575757 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515B37
#515B37
oklch(45.3% 0.056 121.3)
- #5B4F71
#5B4F71
oklch(45.3% 0.056 300.4)
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 #515B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Army Green #4B5D16 ΔE 0.041
- Camo Green #526525 ΔE 0.043
- Olive Brown #645403 ΔE 0.047
- Pine #2B5D34 ΔE 0.048
- Camouflage Green #4B6113 ΔE 0.049
- Green Brown #544E03 ΔE 0.051
- Dark Olive Green #556B2F ΔE 0.055
- Greeny Brown #696006 ΔE 0.058
Use #515B37 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.