#37000F
Closest named color: Dark Maroon (#3C0008). oklch(21.5% 0.086 11.4), rgb(55, 0, 15).
Aa
White text reads best on this color (17.95:1).
About this color
#37000F is a very dark, moderately saturated red. In OKLCH its lightness is 21%, its chroma 0.086 and its hue 11°. 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 17.95:1.
| 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 | 17.95:1 |
Values
| HEX | #37000F |
| RGB | rgb(55, 0, 15) |
| HSL | hsl(344, 100%, 11%) |
| OKLCH | oklch(21.5% 0.086 11.4) |
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 #37000F | 17.95:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #37000F | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #37000F text on white | 17.95:1 | AAA | Lc 103.8 | Preferred for body text |
| #37000F 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
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FDE2E5
oklch(93.6% 0.03 10)
-
Step 200
200
#FCCAD0
oklch(88.4% 0.057 10.2)
-
Step 300
300
#FBA5B0
oklch(80.9% 0.103 11.2)
-
Step 400
400
#F37087
oklch(70.7% 0.162 11.3)
-
Step 500
500
#EB3E69
oklch(63.2% 0.209 11.3)
-
Step 600
600
#D40051
oklch(55.5% 0.222 11.4)
-
Step 700
700
#B40043
oklch(49.1% 0.196 11.6)
-
Step 800
800
#950036
oklch(42.7% 0.171 11.6)
-
Step 900
900
#78122F
oklch(37.6% 0.135 11.2)
-
Step 950
950 (this color)
#37000F
oklch(21.5% 0.086 11.4)
#37000F 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) | #0F0F0F | 0.098 |
| Deuteranopia (no green cones) | #1E1B0D | 0.088 |
| Tritanopia (no blue cones) | #3D0005 | 0.023 |
| Achromatopsia (no color) | #171717 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37000F
#37000F
oklch(21.5% 0.086 11.4)
- #001F1E
#001F1E
oklch(21.6% 0.037 191.7)
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 #37000F, 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 0.039
- Mahogany #4A0100 ΔE 0.056
- Dark Plum #3F012C ΔE 0.056
- Aubergine #3D0734 ΔE 0.069
- Eggplant #380835 ΔE 0.071
- Chocolate Brown #411900 ΔE 0.076
- Very Dark Brown #1D0200 ΔE 0.076
Use #37000F 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.