#37090B
Closest named color: Dark Maroon (#3C0008). oklch(22.7% 0.072 22.8), rgb(55, 9, 11).
Aa
White text reads best on this color (17.40:1).
About this color
#37090B is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.072 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.018 away. White text reads best on it, at 17.40:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.20:1 |
| White text | 17.40:1 |
Values
| HEX | #37090B |
| RGB | rgb(55, 9, 11) |
| HSL | hsl(357, 72%, 13%) |
| OKLCH | oklch(22.7% 0.072 22.8) |
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 #37090B | 17.40:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #37090B | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #37090B text on white | 17.40:1 | AAA | Lc 103.7 | Preferred for body text |
| #37090B text on black | 1.20:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CECB
oklch(88.6% 0.047 23)
-
Step 300
300
#F3ABA7
oklch(80.9% 0.085 22.7)
-
Step 400
400
#EA7B78
oklch(70.7% 0.138 22.8)
-
Step 500
500
#E05355
oklch(63.1% 0.176 22.8)
-
Step 600
600
#CB303A
oklch(55.6% 0.191 22.9)
-
Step 700
700
#AF202D
oklch(49.1% 0.177 22.7)
-
Step 800
800
#8E1E26
oklch(42.7% 0.147 22.7)
-
Step 900
900
#722123
oklch(37.7% 0.114 23.1)
-
Step 950
950 (this color)
#37090B
oklch(22.7% 0.072 22.8)
#37090B 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) | #16140B | 0.079 |
| Deuteranopia (no green cones) | #221E0A | 0.072 |
| Tritanopia (no blue cones) | #3D000A | 0.020 |
| Achromatopsia (no color) | #1A1A1A | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37090B
#37090B
oklch(22.7% 0.072 22.8)
- #002124
#002124
oklch(22.6% 0.038 203.5)
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 #37090B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.018
- Deep Brown #410200 ΔE 0.027
- Mahogany #4A0100 ΔE 0.046
- Chocolate Brown #411900 ΔE 0.054
- Dark Brown #341C02 ΔE 0.055
- Dark Plum #3F012C ΔE 0.067
- Aubergine #3D0734 ΔE 0.077
- Very Dark Brown #1D0200 ΔE 0.079
Use #37090B 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.