#370A1B
Closest named color: Dark Maroon (#3C0008). oklch(23.2% 0.073 1.6), rgb(55, 10, 27).
Aa
White text reads best on this color (17.18:1).
About this color
#370A1B is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.073 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.033 away. White text reads best on it, at 17.18:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.22:1 |
| White text | 17.18:1 |
Values
| HEX | #370A1B |
| RGB | rgb(55, 10, 27) |
| HSL | hsl(337, 69%, 13%) |
| OKLCH | oklch(23.2% 0.073 1.6) |
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 #370A1B | 17.18:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370A1B | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #370A1B text on white | 17.18:1 | AAA | Lc 103.6 | Preferred for body text |
| #370A1B text on black | 1.22:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3E8
oklch(93.5% 0.025 2.1)
-
Step 200
200
#F6CDD7
oklch(88.6% 0.048 1.7)
-
Step 300
300
#F0AABC
oklch(80.9% 0.085 2.3)
-
Step 400
400
#E5799A
oklch(70.6% 0.138 1.8)
-
Step 500
500
#DA5182
oklch(63% 0.176 1.4)
-
Step 600
600
#C62E6B
oklch(55.7% 0.192 1.8)
-
Step 700
700
#AA1E59
oklch(49.1% 0.178 1.8)
-
Step 800
800
#8A1D49
oklch(42.7% 0.147 1.7)
-
Step 900
900
#6F203D
oklch(37.7% 0.114 1.8)
-
Step 950
950 (this color)
#370A1B
oklch(23.2% 0.073 1.6)
#370A1B 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) | #14161B | 0.081 |
| Deuteranopia (no green cones) | #201E1A | 0.072 |
| Tritanopia (no blue cones) | #3C0511 | 0.020 |
| Achromatopsia (no color) | #1B1B1B | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370A1B
#370A1B
oklch(23.2% 0.073 1.6)
- #00241F
#00241F
oklch(23.3% 0.042 181.5)
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 #370A1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.033
- Dark Plum #3F012C ΔE 0.042
- Deep Brown #410200 ΔE 0.047
- Aubergine #3D0734 ΔE 0.050
- Eggplant #380835 ΔE 0.051
- Mahogany #4A0100 ΔE 0.059
- Chocolate Brown #411900 ΔE 0.069
- Dark Purple #35063E ΔE 0.070
Use #370A1B 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.