#370D00
Closest named color: Deep Brown (#410200). oklch(23% 0.072 40.4), rgb(55, 13, 0).
Aa
White text reads best on this color (17.21:1).
About this color
#370D00 is a very dark, moderately saturated brown. In OKLCH its lightness is 23%, its chroma 0.072 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.028 away. White text reads best on it, at 17.21:1.
| Hue family | Browns |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.22:1 |
| White text | 17.21:1 |
Values
| HEX | #370D00 |
| RGB | rgb(55, 13, 0) |
| HSL | hsl(14, 100%, 11%) |
| OKLCH | oklch(23% 0.072 40.4) |
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 #370D00 | 17.21:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370D00 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #370D00 text on white | 17.21:1 | AAA | Lc 103.6 | Preferred for body text |
| #370D00 text on black | 1.22:1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DE
oklch(93.6% 0.024 40.3)
-
Step 200
200
#F6CFC2
oklch(88.4% 0.048 39.3)
-
Step 300
300
#F1AF97
oklch(81% 0.085 40.8)
-
Step 400
400
#E7815C
oklch(70.8% 0.136 40.4)
-
Step 500
500
#DC5C28
oklch(63.1% 0.173 40.5)
-
Step 600
600
#C24300
oklch(55.5% 0.173 40.3)
-
Step 700
700
#A43800
oklch(49.1% 0.153 40.5)
-
Step 800
800
#882D00
oklch(42.8% 0.133 40.5)
-
Step 900
900
#702604
oklch(37.6% 0.113 40.7)
-
Step 950
950 (this color)
#370D00
oklch(23% 0.072 40.4)
#370D00 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) | #1A1500 | 0.069 |
| Deuteranopia (no green cones) | #241F00 | 0.064 |
| Tritanopia (no blue cones) | #3E020A | 0.033 |
| Achromatopsia (no color) | #1B1B1B | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370D00
#370D00
oklch(23% 0.072 40.4)
- #00212B
#00212B
oklch(23% 0.042 222)
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 #370D00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.028
- Dark Maroon #3C0008 ΔE 0.034
- Dark Brown #341C02 ΔE 0.039
- Chocolate Brown #411900 ΔE 0.041
- Mahogany #4A0100 ΔE 0.046
- Very Dark Brown #1D0200 ΔE 0.081
- Jet #212529 ΔE 0.086
- Dark Plum #3F012C ΔE 0.088
Use #370D00 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.