#37131D
Closest named color: Dark Maroon (#3C0008). oklch(24.7% 0.059 5), rgb(55, 19, 29).
Aa
White text reads best on this color (16.49:1).
About this color
#37131D is a very dark, muted red. In OKLCH its lightness is 25%, its chroma 0.059 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.043 away. White text reads best on it, at 16.49:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.27:1 |
| White text | 16.49:1 |
Values
| HEX | #37131D |
| RGB | rgb(55, 19, 29) |
| HSL | hsl(343, 49%, 15%) |
| OKLCH | oklch(24.7% 0.059 5) |
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 #37131D | 16.49:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #37131D | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #37131D text on white | 16.49:1 | AAA | Lc 103.2 | Preferred for body text |
| #37131D 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F7E5E8
oklch(93.7% 0.02 6)
-
Step 200
200
#F1CFD6
oklch(88.5% 0.039 4)
-
Step 300
300
#E8AEBA
oklch(80.8% 0.069 5)
-
Step 400
400
#DB8297
oklch(70.7% 0.112 5.1)
-
Step 500
500
#CE607E
oklch(63.1% 0.142 4.9)
-
Step 600
600
#B94467
oklch(55.6% 0.153 5.1)
-
Step 700
700
#9F3456
oklch(49% 0.144 4.7)
-
Step 800
800
#812D46
oklch(42.7% 0.118 5.2)
-
Step 900
900
#68293B
oklch(37.6% 0.092 4.7)
-
Step 950
950 (this color)
#37131D
oklch(24.7% 0.059 5)
#37131D 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) | #1A1B1D | 0.064 |
| Deuteranopia (no green cones) | #23221C | 0.061 |
| Tritanopia (no blue cones) | #3C0F17 | 0.015 |
| Achromatopsia (no color) | #1F1F1F | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37131D
#37131D
oklch(24.7% 0.059 5)
- #002723
#002723
oklch(24.5% 0.043 184.7)
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 #37131D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.043
- Deep Brown #410200 ΔE 0.049
- Dark Plum #3F012C ΔE 0.052
- Chocolate Brown #411900 ΔE 0.056
- Aubergine #3D0734 ΔE 0.056
- Dark Brown #341C02 ΔE 0.057
- Eggplant #380835 ΔE 0.057
- Mahogany #4A0100 ΔE 0.058
Use #37131D 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.