#37231D
Closest named color: Dark Brown (#341C02). oklch(27.9% 0.033 37.4), rgb(55, 35, 29).
Aa
White text reads best on this color (14.78:1).
About this color
#37231D is a dark, muted red. In OKLCH its lightness is 28%, its chroma 0.033 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.039 away. White text reads best on it, at 14.78:1.
| Hue family | Reds |
| Lightness | dark (28%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.42:1 |
| White text | 14.78:1 |
Values
| HEX | #37231D |
| RGB | rgb(55, 35, 29) |
| HSL | hsl(14, 31%, 16%) |
| OKLCH | oklch(27.9% 0.033 37.4) |
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 #37231D | 14.78:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #37231D | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #37231D text on white | 14.78:1 | AAA | Lc 101.6 | Preferred for body text |
| #37231D text on black | 1.42:1 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E7E5
oklch(93.5% 0.011 31.1)
-
Step 200
200
#E7D5CF
oklch(88.6% 0.022 39.4)
-
Step 300
300
#D8B9AF
oklch(81% 0.038 38.7)
-
Step 400
400
#C49485
oklch(70.8% 0.062 38.1)
-
Step 500
500
#B47867
oklch(63.1% 0.08 36.5)
-
Step 600
600
#9F614E
oklch(55.7% 0.086 37.8)
-
Step 700
700
#88503F
oklch(49.2% 0.08 37.7)
-
Step 800
800
#6E4134
oklch(42.6% 0.067 36.9)
-
Step 900
900
#5A382D
oklch(37.8% 0.052 38.7)
-
Step 950
950 (this color)
#37231D
oklch(27.9% 0.033 37.4)
#37231D 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) | #28251D | 0.030 |
| Deuteranopia (no green cones) | #2C291D | 0.028 |
| Tritanopia (no blue cones) | #3C2021 | 0.017 |
| Achromatopsia (no color) | #282828 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37231D
#37231D
oklch(27.9% 0.033 37.4)
- #142D33
#142D33
oklch(28% 0.033 215.2)
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 #37231D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.039
- Chocolate Brown #411900 ΔE 0.042
- Jet #212529 ΔE 0.045
- Dark #1B2431 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.066
- Gunmetal #293241 ΔE 0.068
- Oxford Blue #1B263B ΔE 0.070
- Pakistan Green #283618 ΔE 0.071
Use #37231D 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.