#370A17
Closest named color: Dark Maroon (#3C0008). oklch(23.1% 0.072 7.4), rgb(55, 10, 23).
Aa
White text reads best on this color (17.23:1).
About this color
#370A17 is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.072 and its hue 7°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.027 away. White text reads best on it, at 17.23:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.21:1 |
| White text | 17.23:1 |
Values
| HEX | #370A17 |
| RGB | rgb(55, 10, 23) |
| HSL | hsl(343, 69%, 13%) |
| OKLCH | oklch(23.1% 0.072 7.4) |
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 #370A17 | 17.23:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370A17 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #370A17 text on white | 17.23:1 | AAA | Lc 103.6 | Preferred for body text |
| #370A17 text on black | 1.21:1 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F6CDD3
oklch(88.5% 0.047 8.2)
-
Step 300
300
#F1AAB7
oklch(80.9% 0.085 7.1)
-
Step 400
400
#E67A91
oklch(70.7% 0.135 7.6)
-
Step 500
500
#DC5276
oklch(63.1% 0.174 7.6)
-
Step 600
600
#C7305F
oklch(55.7% 0.188 7.6)
-
Step 700
700
#AB204F
oklch(49.1% 0.175 7.2)
-
Step 800
800
#8B1E40
oklch(42.7% 0.145 7.7)
-
Step 900
900
#702037
oklch(37.7% 0.113 7)
-
Step 950
950 (this color)
#370A17
oklch(23.1% 0.072 7.4)
#370A17 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) | #151517 | 0.079 |
| Deuteranopia (no green cones) | #201E16 | 0.073 |
| Tritanopia (no blue cones) | #3D040F | 0.019 |
| Achromatopsia (no color) | #1B1B1B | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370A17
#370A17
oklch(23.1% 0.072 7.4)
- #002320
#002320
oklch(23.1% 0.04 186.5)
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 #370A17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.027
- Deep Brown #410200 ΔE 0.041
- Dark Plum #3F012C ΔE 0.049
- Mahogany #4A0100 ΔE 0.054
- Aubergine #3D0734 ΔE 0.058
- Eggplant #380835 ΔE 0.059
- Chocolate Brown #411900 ΔE 0.064
- Dark Brown #341C02 ΔE 0.066
Use #370A17 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.