#370310
Closest named color: Dark Maroon (#3C0008). oklch(22% 0.081 12.2), rgb(55, 3, 16).
Aa
White text reads best on this color (17.75:1).
About this color
#370310 is a very dark, moderately saturated red. In OKLCH its lightness is 22%, its chroma 0.081 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.017 away. White text reads best on it, at 17.75:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.18:1 |
| White text | 17.75:1 |
Values
| HEX | #370310 |
| RGB | rgb(55, 3, 16) |
| HSL | hsl(345, 90%, 11%) |
| OKLCH | oklch(22% 0.081 12.2) |
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 #370310 | 17.75:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #370310 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #370310 text on white | 17.75:1 | AAA | Lc 103.8 | Preferred for body text |
| #370310 text on black | 1.18:1 | 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
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FCE3E5
oklch(93.7% 0.028 12.1)
-
Step 200
200
#FACBD0
oklch(88.4% 0.054 11)
-
Step 300
300
#F8A7B0
oklch(80.9% 0.096 12.1)
-
Step 400
400
#F07387
oklch(70.7% 0.154 11.9)
-
Step 500
500
#E64669
oklch(63.1% 0.196 12.1)
-
Step 600
600
#D11651
oklch(55.5% 0.213 12)
-
Step 700
700
#B40042
oklch(49.1% 0.196 12)
-
Step 800
800
#930B36
oklch(42.7% 0.164 12.2)
-
Step 900
900
#76182F
oklch(37.7% 0.128 12.1)
-
Step 950
950 (this color)
#370310
oklch(22% 0.081 12.2)
#370310 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) | #111110 | 0.092 |
| Deuteranopia (no green cones) | #1F1C0F | 0.082 |
| Tritanopia (no blue cones) | #3D0008 | 0.018 |
| Achromatopsia (no color) | #181818 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370310
#370310
oklch(22% 0.081 12.2)
- #00201F
#00201F
oklch(22% 0.038 191.8)
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 #370310, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.017
- Deep Brown #410200 ΔE 0.036
- Mahogany #4A0100 ΔE 0.053
- Dark Plum #3F012C ΔE 0.056
- Aubergine #3D0734 ΔE 0.068
- Eggplant #380835 ΔE 0.069
- Chocolate Brown #411900 ΔE 0.070
- Dark Brown #341C02 ΔE 0.073
Use #370310 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.