#370F03
Closest named color: Deep Brown (#410200). oklch(23.4% 0.068 38.6), rgb(55, 15, 3).
Aa
White text reads best on this color (17.04:1).
About this color
#370F03 is a very dark, muted red. In OKLCH its lightness is 23%, its chroma 0.068 and its hue 39°. 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 17.04:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | muted (0.068) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.23:1 |
| White text | 17.04:1 |
Values
| HEX | #370F03 |
| RGB | rgb(55, 15, 3) |
| HSL | hsl(14, 90%, 11%) |
| OKLCH | oklch(23.4% 0.068 38.6) |
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 #370F03 | 17.04:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #370F03 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #370F03 text on white | 17.04:1 | AAA | Lc 103.5 | Preferred for body text |
| #370F03 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
#F5D0C4
oklch(88.6% 0.045 38.8)
-
Step 300
300
#EFAF9B
oklch(80.9% 0.081 38.1)
-
Step 400
400
#E48263
oklch(70.7% 0.129 38.3)
-
Step 500
500
#D95E35
oklch(63% 0.164 38.4)
-
Step 600
600
#C54003
oklch(55.7% 0.179 38.6)
-
Step 700
700
#A73400
oklch(49.2% 0.159 38.6)
-
Step 800
800
#8A2A01
oklch(42.8% 0.138 38.6)
-
Step 900
900
#6F280F
oklch(37.8% 0.107 38.5)
-
Step 950
950 (this color)
#370F03
oklch(23.4% 0.068 38.6)
#370F03 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) | #1B1602 | 0.066 |
| Deuteranopia (no green cones) | #241F02 | 0.061 |
| Tritanopia (no blue cones) | #3E050C | 0.030 |
| Achromatopsia (no color) | #1C1C1C | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370F03
#370F03
oklch(23.4% 0.068 38.6)
- #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 #370F03, 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 0.035
- Dark Brown #341C02 ΔE 0.036
- Chocolate Brown #411900 ΔE 0.038
- Mahogany #4A0100 ΔE 0.046
- Jet #212529 ΔE 0.081
- Very Dark Brown #1D0200 ΔE 0.084
- Dark Plum #3F012C ΔE 0.085
Use #370F03 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.