#37000B
Closest named color: Dark Maroon (#3C0008). oklch(21.4% 0.086 15.9), rgb(55, 0, 11).
Aa
White text reads best on this color (17.99:1).
About this color
#37000B is a very dark, moderately saturated red. In OKLCH its lightness is 21%, its chroma 0.086 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.014 away. White text reads best on it, at 17.99:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.16:1 |
| White text | 17.99:1 |
Values
| HEX | #37000B |
| RGB | rgb(55, 0, 11) |
| HSL | hsl(348, 100%, 11%) |
| OKLCH | oklch(21.4% 0.086 15.9) |
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 #37000B | 17.99:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #37000B | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #37000B text on white | 17.99:1 | AAA | Lc 103.8 | Preferred for body text |
| #37000B text on black | 1.16:1 | 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
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FDE2E3
oklch(93.5% 0.03 15.1)
-
Step 200
200
#FCCBCD
oklch(88.5% 0.056 15.5)
-
Step 300
300
#FBA6AA
oklch(81% 0.101 16.5)
-
Step 400
400
#F4707E
oklch(70.6% 0.162 15.7)
-
Step 500
500
#EB3F5D
oklch(63% 0.207 15.9)
-
Step 600
600
#D60045
oklch(55.6% 0.223 15.8)
-
Step 700
700
#B50039
oklch(49.1% 0.196 15.7)
-
Step 800
800
#96002D
oklch(42.7% 0.171 16.1)
-
Step 900
900
#791328
oklch(37.8% 0.135 16.1)
-
Step 950
950 (this color)
#37000B
oklch(21.4% 0.086 15.9)
#37000B 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) | #100F0B | 0.096 |
| Deuteranopia (no green cones) | #1E1B09 | 0.088 |
| Tritanopia (no blue cones) | #3D0004 | 0.020 |
| Achromatopsia (no color) | #171717 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37000B
#37000B
oklch(21.4% 0.086 15.9)
- #001E1F
#001E1F
oklch(21.3% 0.036 197.9)
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 #37000B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.014
- Deep Brown #410200 ΔE 0.034
- Mahogany #4A0100 ΔE 0.053
- Dark Plum #3F012C ΔE 0.063
- Chocolate Brown #411900 ΔE 0.073
- Very Dark Brown #1D0200 ΔE 0.074
- Aubergine #3D0734 ΔE 0.075
- Dark Brown #341C02 ΔE 0.075
Use #37000B 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.