#370F04
Closest named color: Deep Brown (#410200). oklch(23.4% 0.067 37.3), rgb(55, 15, 4).
Aa
White text reads best on this color (17.03:1).
About this color
#370F04 is a very dark, muted red. In OKLCH its lightness is 23%, its chroma 0.067 and its hue 37°. 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 17.03:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | muted (0.067) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.23:1 |
| White text | 17.03:1 |
Values
| HEX | #370F04 |
| RGB | rgb(55, 15, 4) |
| HSL | hsl(13, 86%, 12%) |
| OKLCH | oklch(23.4% 0.067 37.3) |
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 #370F04 | 17.03:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370F04 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #370F04 text on white | 17.03:1 | AAA | Lc 103.5 | Preferred for body text |
| #370F04 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F5D0C5
oklch(88.6% 0.045 37.2)
-
Step 300
300
#EFAF9C
oklch(80.9% 0.08 37.2)
-
Step 400
400
#E48265
oklch(70.7% 0.128 37.3)
-
Step 500
500
#D95E39
oklch(63.1% 0.163 37.2)
-
Step 600
600
#C4400F
oklch(55.6% 0.176 37.5)
-
Step 700
700
#A93100
oklch(49.2% 0.163 37.3)
-
Step 800
800
#892A07
oklch(42.7% 0.136 37.5)
-
Step 900
900
#6F2811
oklch(37.8% 0.107 37.7)
-
Step 950
950 (this color)
#370F04
oklch(23.4% 0.067 37.3)
#370F04 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) | #1A1603 | 0.068 |
| Deuteranopia (no green cones) | #241F03 | 0.061 |
| Tritanopia (no blue cones) | #3D050D | 0.029 |
| Achromatopsia (no color) | #1C1C1C | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370F04
#370F04
oklch(23.4% 0.067 37.3)
- #00222B
#00222B
oklch(23.3% 0.042 219.2)
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 #370F04, 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 0.034
- Dark Brown #341C02 ΔE 0.037
- Chocolate Brown #411900 ΔE 0.039
- Mahogany #4A0100 ΔE 0.046
- Jet #212529 ΔE 0.081
- Dark Plum #3F012C ΔE 0.083
- Very Dark Brown #1D0200 ΔE 0.084
Use #370F04 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.