#37440B
Closest named color: Dark Olive (#373E02). oklch(36.3% 0.08 121.9), rgb(55, 68, 11).
Aa
White text reads best on this color (10.53:1).
About this color
#37440B is a dark, moderately saturated brown. In OKLCH its lightness is 36%, its chroma 0.080 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.019 away. White text reads best on it, at 10.53:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.080) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #37440B |
| RGB | rgb(55, 68, 11) |
| HSL | hsl(74, 72%, 15%) |
| OKLCH | oklch(36.3% 0.08 121.9) |
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 #37440B | 10.53:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #37440B | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #37440B text on white | 10.53:1 | AAA | Lc 94.3 | Preferred for body text |
| #37440B text on black | 1.99:1 | Fails | Lc -8.2 | 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 900.
-
Step 50
50
#F4F6F0
oklch(97% 0.008 121.6)
-
Step 100
100
#E8ECDF
oklch(93.6% 0.018 120.7)
-
Step 200
200
#D5DDC5
oklch(88.5% 0.033 122.1)
-
Step 300
300
#BAC79D
oklch(80.9% 0.059 121.7)
-
Step 400
400
#96AA65
oklch(70.6% 0.096 122.1)
-
Step 500
500
#7D9538
oklch(63.2% 0.123 122.2)
-
Step 600
600
#677F06
oklch(55.7% 0.133 122)
-
Step 700
700
#566A00
oklch(49% 0.118 121.7)
-
Step 800
800
#465702
oklch(42.7% 0.102 121.9)
-
Step 900
900 (this color)
#37440B
oklch(36.3% 0.08 121.9)
-
Step 950
950
#222A0C
oklch(26.9% 0.05 122.3)
#37440B 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) | #493F02 | 0.032 |
| Deuteranopia (no green cones) | #473F10 | 0.032 |
| Tritanopia (no blue cones) | #3A4039 | 0.066 |
| Achromatopsia (no color) | #3F3F3F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37440B
#37440B
oklch(36.3% 0.08 121.9)
- #463260
#463260
oklch(36.2% 0.08 302.7)
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 #37440B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.019
- Forrest Green #154406 ΔE 0.042
- Pine Green #0A481E ΔE 0.043
- British Racing Green #05480D ΔE 0.048
- Navy Green #35530A ΔE 0.049
- Darkgreen #054907 ΔE 0.050
- Evergreen #05472A ΔE 0.050
- Bottle Green #044A05 ΔE 0.051
Use #37440B 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.