#370F0A
Closest named color: Deep Brown (#410200). oklch(23.5% 0.065 29.9), rgb(55, 15, 10).
Aa
White text reads best on this color (17.00:1).
About this color
#370F0A is a very dark, muted red. In OKLCH its lightness is 23%, its chroma 0.065 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.029 away. White text reads best on it, at 17.00:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.23:1 |
| White text | 17.00:1 |
Values
| HEX | #370F0A |
| RGB | rgb(55, 15, 10) |
| HSL | hsl(7, 69%, 13%) |
| OKLCH | oklch(23.5% 0.065 29.9) |
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 #370F0A | 17.00:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370F0A | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #370F0A text on white | 17.00:1 | AAA | Lc 103.5 | Preferred for body text |
| #370F0A text on black | 1.23:1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F4CFC9
oklch(88.4% 0.043 28.8)
-
Step 300
300
#EEAEA3
oklch(80.8% 0.077 29.8)
-
Step 400
400
#E38172
oklch(70.6% 0.124 29.7)
-
Step 500
500
#D85D4D
oklch(63% 0.158 29.7)
-
Step 600
600
#C33F30
oklch(55.6% 0.171 29.9)
-
Step 700
700
#A82F22
oklch(49% 0.16 29.9)
-
Step 800
800
#89291E
oklch(42.7% 0.132 30)
-
Step 900
900
#6E271E
oklch(37.7% 0.103 29.9)
-
Step 950
950 (this color)
#370F0A
oklch(23.5% 0.065 29.9)
#370F0A 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) | #1A1709 | 0.068 |
| Deuteranopia (no green cones) | #241F09 | 0.061 |
| Tritanopia (no blue cones) | #3D060E | 0.023 |
| Achromatopsia (no color) | #1C1C1C | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370F0A
#370F0A
oklch(23.5% 0.065 29.9)
- #002329
#002329
oklch(23.5% 0.041 211.3)
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 #370F0A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.029
- Dark Maroon #3C0008 ΔE 0.030
- Dark Brown #341C02 ΔE 0.042
- Chocolate Brown #411900 ΔE 0.042
- Mahogany #4A0100 ΔE 0.045
- Dark Plum #3F012C ΔE 0.074
- Jet #212529 ΔE 0.078
- Aubergine #3D0734 ΔE 0.082
Use #370F0A 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.