#37091D
Closest named color: Dark Maroon (#3C0008). oklch(23.2% 0.075 358.3), rgb(55, 9, 29).
Aa
White text reads best on this color (17.22:1).
About this color
#37091D is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.075 and its hue 358°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.036 away. White text reads best on it, at 17.22:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.21:1 |
| White text | 17.22:1 |
Values
| HEX | #37091D |
| RGB | rgb(55, 9, 29) |
| HSL | hsl(334, 72%, 13%) |
| OKLCH | oklch(23.2% 0.075 358.3) |
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 #37091D | 17.22:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #37091D | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #37091D text on white | 17.22:1 | AAA | Lc 103.6 | Preferred for body text |
| #37091D text on black | 1.21:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3EA
oklch(93.6% 0.026 356.3)
-
Step 200
200
#F6CCD9
oklch(88.5% 0.05 357.6)
-
Step 300
300
#F1A9C0
oklch(81% 0.089 358.5)
-
Step 400
400
#E678A0
oklch(70.8% 0.142 358.3)
-
Step 500
500
#DB4F88
oklch(63.1% 0.182 358.5)
-
Step 600
600
#C62A72
oklch(55.6% 0.198 358.4)
-
Step 700
700
#AA1A60
oklch(49% 0.184 358)
-
Step 800
800
#8A1A4E
oklch(42.6% 0.152 358.2)
-
Step 900
900
#6F1E41
oklch(37.6% 0.118 358)
-
Step 950
950 (this color)
#37091D
oklch(23.2% 0.075 358.3)
#37091D 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) | #12151E | 0.084 |
| Deuteranopia (no green cones) | #1F1E1C | 0.075 |
| Tritanopia (no blue cones) | #3C0411 | 0.024 |
| Achromatopsia (no color) | #1B1B1B | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37091D
#37091D
oklch(23.2% 0.075 358.3)
- #00241D
#00241D
oklch(23.3% 0.043 176.7)
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 #37091D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.036
- Dark Plum #3F012C ΔE 0.038
- Aubergine #3D0734 ΔE 0.046
- Eggplant #380835 ΔE 0.047
- Deep Brown #410200 ΔE 0.051
- Mahogany #4A0100 ΔE 0.062
- Dark Purple #35063E ΔE 0.066
- Very Dark Purple #2A0134 ΔE 0.066
Use #37091D 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.