#370B10
Closest named color: Dark Maroon (#3C0008). oklch(23% 0.07 18.1), rgb(55, 11, 16).
Aa
White text reads best on this color (17.24:1).
About this color
#370B10 is a very dark, muted red. In OKLCH its lightness is 23%, its chroma 0.070 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.022 away. White text reads best on it, at 17.24:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | muted (0.070) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.21:1 |
| White text | 17.24:1 |
Values
| HEX | #370B10 |
| RGB | rgb(55, 11, 16) |
| HSL | hsl(353, 67%, 13%) |
| OKLCH | oklch(23% 0.07 18.1) |
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 #370B10 | 17.24:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #370B10 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #370B10 text on white | 17.24:1 | AAA | Lc 103.6 | Preferred for body text |
| #370B10 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#FAE4E4
oklch(93.7% 0.024 17.6)
-
Step 200
200
#F6CECE
oklch(88.6% 0.045 18)
-
Step 300
300
#F1ABAC
oklch(80.8% 0.083 18.1)
-
Step 400
400
#E77C81
oklch(70.7% 0.132 18.1)
-
Step 500
500
#DC5662
oklch(63.1% 0.168 18)
-
Step 600
600
#C83448
oklch(55.7% 0.184 18.3)
-
Step 700
700
#AC243A
oklch(49.1% 0.171 18)
-
Step 800
800
#8C2130
oklch(42.7% 0.142 18.1)
-
Step 900
900
#70222A
oklch(37.6% 0.11 18.3)
-
Step 950
950 (this color)
#370B10
oklch(23% 0.07 18.1)
#370B10 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) | #161510 | 0.077 |
| Deuteranopia (no green cones) | #221E0F | 0.069 |
| Tritanopia (no blue cones) | #3D030D | 0.018 |
| Achromatopsia (no color) | #1B1B1B | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370B10
#370B10
oklch(23% 0.07 18.1)
- #002224
#002224
oklch(22.9% 0.039 200.5)
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 #370B10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.022
- Deep Brown #410200 ΔE 0.031
- Mahogany #4A0100 ΔE 0.048
- Chocolate Brown #411900 ΔE 0.055
- Dark Brown #341C02 ΔE 0.056
- Dark Plum #3F012C ΔE 0.061
- Aubergine #3D0734 ΔE 0.070
- Eggplant #380835 ΔE 0.072
Use #370B10 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.