#37151C
Closest named color: Dark Maroon (#3C0008). oklch(25% 0.055 9), rgb(55, 21, 28).
Aa
White text reads best on this color (16.32:1).
About this color
#37151C is a very dark, muted red. In OKLCH its lightness is 25%, its chroma 0.055 and its hue 9°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.046 away. White text reads best on it, at 16.32:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.28:1 |
| White text | 16.32:1 |
Values
| HEX | #37151C |
| RGB | rgb(55, 21, 28) |
| HSL | hsl(348, 45%, 15%) |
| OKLCH | oklch(25% 0.055 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 #37151C | 16.32:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #37151C | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #37151C text on white | 16.32:1 | AAA | Lc 103.0 | Preferred for body text |
| #37151C text on black | 1.28:1 | 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F6E5E7
oklch(93.6% 0.019 9.3)
-
Step 200
200
#F0D0D4
oklch(88.6% 0.036 9.3)
-
Step 300
300
#E7B0B8
oklch(81% 0.065 8.9)
-
Step 400
400
#D88593
oklch(70.7% 0.103 9.1)
-
Step 500
500
#CB6479
oklch(63.1% 0.132 8.8)
-
Step 600
600
#B74861
oklch(55.6% 0.145 9.3)
-
Step 700
700
#9D3951
oklch(49.2% 0.134 8.8)
-
Step 800
800
#7F3042
oklch(42.7% 0.11 9)
-
Step 900
900
#672B38
oklch(37.7% 0.087 8.7)
-
Step 950
950 (this color)
#37151C
oklch(25% 0.055 9)
#37151C 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) | #1C1C1C | 0.060 |
| Deuteranopia (no green cones) | #24221B | 0.055 |
| Tritanopia (no blue cones) | #3C1118 | 0.014 |
| Achromatopsia (no color) | #202020 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37151C
#37151C
oklch(25% 0.055 9)
- #002826
#002826
oklch(25% 0.043 189.7)
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 #37151C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.046
- Deep Brown #410200 ΔE 0.049
- Chocolate Brown #411900 ΔE 0.051
- Dark Brown #341C02 ΔE 0.051
- Mahogany #4A0100 ΔE 0.057
- Dark Plum #3F012C ΔE 0.058
- Aubergine #3D0734 ΔE 0.061
- Jet #212529 ΔE 0.061
Use #37151C 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.