#37310D
Closest named color: Pakistan Green (#283618). oklch(31.1% 0.053 99.8), rgb(55, 49, 13).
Aa
White text reads best on this color (13.06:1).
About this color
#37310D is a dark, muted brown. In OKLCH its lightness is 31%, its chroma 0.053 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Pakistan Green (#283618), ΔE 0.027 away. White text reads best on it, at 13.06:1.
| Hue family | Browns |
| Lightness | dark (31%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Pakistan Green (#283618) |
| Black text | 1.60:1 |
| White text | 13.06:1 |
Values
| HEX | #37310D |
| RGB | rgb(55, 49, 13) |
| HSL | hsl(51, 62%, 13%) |
| OKLCH | oklch(31.1% 0.053 99.8) |
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 #37310D | 13.06:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #37310D | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #37310D text on white | 13.06:1 | AAA | Lc 99.3 | Preferred for body text |
| #37310D text on black | 1.60:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F7F6EF
oklch(97.2% 0.009 100)
-
Step 100
100
#ECEADD
oklch(93.5% 0.017 99.6)
-
Step 200
200
#DEDAC0
oklch(88.5% 0.035 99.9)
-
Step 300
300
#CAC293
oklch(80.9% 0.063 99.5)
-
Step 400
400
#AFA254
oklch(70.7% 0.101 100)
-
Step 500
500
#9C8A0A
oklch(63% 0.129 99.8)
-
Step 600
600
#847400
oklch(55.7% 0.116 99.7)
-
Step 700
700
#6F6100
oklch(49.1% 0.102 99.4)
-
Step 800
800
#5B4F00
oklch(42.7% 0.088 99.2)
-
Step 900
900
#4C4200
oklch(37.8% 0.078 99.5)
-
Step 950
950 (this color)
#37310D
oklch(31.1% 0.053 99.8)
#37310D 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) | #362F09 | 0.007 |
| Deuteranopia (no green cones) | #38320F | 0.004 |
| Tritanopia (no blue cones) | #3C2D29 | 0.048 |
| Achromatopsia (no color) | #313131 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37310D
#37310D
oklch(31.1% 0.053 99.8)
- #2B2D4B
#2B2D4B
oklch(31% 0.054 279.9)
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 #37310D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pakistan Green #283618 ΔE 0.027
- Dark Olive #373E02 ΔE 0.046
- Dark Brown #341C02 ΔE 0.066
- Chocolate Brown #411900 ΔE 0.070
- Hunter Green #0B4008 ΔE 0.072
- Very Dark Green #062E03 ΔE 0.073
- Onyx #343A40 ΔE 0.073
- Forrest Green #154406 ΔE 0.077
Use #37310D 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.