#37150B
Closest named color: Dark Brown (#341C02). oklch(24.6% 0.058 37.1), rgb(55, 21, 11).
Aa
White text reads best on this color (16.47:1).
About this color
#37150B is a very dark, muted red. In OKLCH its lightness is 25%, its chroma 0.058 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.028 away. White text reads best on it, at 16.47:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.27:1 |
| White text | 16.47:1 |
Values
| HEX | #37150B |
| RGB | rgb(55, 21, 11) |
| HSL | hsl(14, 67%, 13%) |
| OKLCH | oklch(24.6% 0.058 37.1) |
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 #37150B | 16.47:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #37150B | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #37150B text on white | 16.47:1 | AAA | Lc 103.1 | Preferred for body text |
| #37150B text on black | 1.27:1 | 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
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F7E6E1
oklch(93.7% 0.02 37)
-
Step 200
200
#F1D1C8
oklch(88.5% 0.038 36.2)
-
Step 300
300
#E9B2A2
oklch(81% 0.068 36.8)
-
Step 400
400
#DB886F
oklch(70.8% 0.109 37.5)
-
Step 500
500
#CF6748
oklch(63.1% 0.139 37.4)
-
Step 600
600
#BA4B2A
oklch(55.5% 0.151 37)
-
Step 700
700
#A03C1C
oklch(49.1% 0.14 37.5)
-
Step 800
800
#82321A
oklch(42.7% 0.116 37)
-
Step 900
900
#692D1B
oklch(37.7% 0.091 37.4)
-
Step 950
950 (this color)
#37150B
oklch(24.6% 0.058 37.1)
#37150B 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) | #1E1A0A | 0.056 |
| Deuteranopia (no green cones) | #26220A | 0.053 |
| Tritanopia (no blue cones) | #3D0E13 | 0.027 |
| Achromatopsia (no color) | #1F1F1F | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37150B
#37150B
oklch(24.6% 0.058 37.1)
- #00252E
#00252E
oklch(24.4% 0.044 217.9)
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 #37150B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.028
- Chocolate Brown #411900 ΔE 0.031
- Deep Brown #410200 ΔE 0.039
- Dark Maroon #3C0008 ΔE 0.044
- Mahogany #4A0100 ΔE 0.050
- Jet #212529 ΔE 0.068
- Dark #1B2431 ΔE 0.082
- Dark Plum #3F012C ΔE 0.082
Use #37150B 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.