#37121B
Closest named color: Dark Maroon (#3C0008). oklch(24.4% 0.06 7.5), rgb(55, 18, 27).
Aa
White text reads best on this color (16.60:1).
About this color
#37121B is a very dark, muted red. In OKLCH its lightness is 24%, its chroma 0.060 and its hue 7°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.040 away. White text reads best on it, at 16.60:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.26:1 |
| White text | 16.60:1 |
Values
| HEX | #37121B |
| RGB | rgb(55, 18, 27) |
| HSL | hsl(345, 51%, 14%) |
| OKLCH | oklch(24.4% 0.06 7.5) |
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 #37121B | 16.60:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #37121B | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #37121B text on white | 16.60:1 | AAA | Lc 103.2 | Preferred for body text |
| #37121B text on black | 1.26:1 | 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
#FCF3F4
oklch(97.1% 0.01 9.5)
-
Step 100
100
#F7E5E7
oklch(93.7% 0.02 9.8)
-
Step 200
200
#F2CFD4
oklch(88.5% 0.04 8.2)
-
Step 300
300
#EAAEB8
oklch(80.9% 0.071 7.7)
-
Step 400
400
#DC8294
oklch(70.7% 0.112 7.5)
-
Step 500
500
#D05F79
oklch(63.1% 0.145 7.8)
-
Step 600
600
#BB4262
oklch(55.6% 0.157 7.7)
-
Step 700
700
#A13351
oklch(49.1% 0.146 7.8)
-
Step 800
800
#832B43
oklch(42.7% 0.122 7.3)
-
Step 900
900
#692838
oklch(37.6% 0.094 7.5)
-
Step 950
950 (this color)
#37121B
oklch(24.4% 0.06 7.5)
#37121B 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) | #191A1B | 0.067 |
| Deuteranopia (no green cones) | #23211A | 0.061 |
| Tritanopia (no blue cones) | #3C0E15 | 0.015 |
| Achromatopsia (no color) | #1E1E1E | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37121B
#37121B
oklch(24.4% 0.06 7.5)
- #002724
#002724
oklch(24.6% 0.043 187.1)
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 #37121B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.040
- Deep Brown #410200 ΔE 0.046
- Dark Plum #3F012C ΔE 0.053
- Chocolate Brown #411900 ΔE 0.055
- Dark Brown #341C02 ΔE 0.055
- Mahogany #4A0100 ΔE 0.056
- Aubergine #3D0734 ΔE 0.058
- Eggplant #380835 ΔE 0.059
Use #37121B 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.