#37151F
Closest named color: Dark Maroon (#3C0008). oklch(25.1% 0.056 3.4), rgb(55, 21, 31).
Aa
White text reads best on this color (16.28:1).
About this color
#37151F is a dark, muted red. In OKLCH its lightness is 25%, its chroma 0.056 and its hue 3°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.048 away. White text reads best on it, at 16.28:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | muted (0.056) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.28:1 |
| White text | 16.28:1 |
Values
| HEX | #37151F |
| RGB | rgb(55, 21, 31) |
| HSL | hsl(342, 45%, 15%) |
| OKLCH | oklch(25.1% 0.056 3.4) |
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 #37151F | 16.28:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #37151F | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #37151F text on white | 16.28:1 | AAA | Lc 103.0 | Preferred for body text |
| #37151F 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
#FBF3F5
oklch(97.1% 0.009 0.1)
-
Step 100
100
#F6E5E8
oklch(93.6% 0.019 5.3)
-
Step 200
200
#EFD0D6
oklch(88.5% 0.036 4.7)
-
Step 300
300
#E6AFBC
oklch(80.8% 0.066 3)
-
Step 400
400
#D7849A
oklch(70.6% 0.105 3)
-
Step 500
500
#CA6381
oklch(63.1% 0.134 3.2)
-
Step 600
600
#B6476A
oklch(55.6% 0.147 3.6)
-
Step 700
700
#9C3859
oklch(49.1% 0.136 3.1)
-
Step 800
800
#7F2F48
oklch(42.7% 0.113 3.8)
-
Step 900
900
#662B3D
oklch(37.7% 0.087 3)
-
Step 950
950 (this color)
#37151F
oklch(25.1% 0.056 3.4)
#37151F 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) | #1B1C1F | 0.061 |
| Deuteranopia (no green cones) | #24221E | 0.055 |
| Tritanopia (no blue cones) | #3C1219 | 0.015 |
| Achromatopsia (no color) | #202020 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37151F
#37151F
oklch(25.1% 0.056 3.4)
- #002924
#002924
oklch(25.2% 0.045 182.7)
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 #37151F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.048
- Deep Brown #410200 ΔE 0.053
- Dark Plum #3F012C ΔE 0.054
- Chocolate Brown #411900 ΔE 0.055
- Aubergine #3D0734 ΔE 0.056
- Dark Brown #341C02 ΔE 0.056
- Eggplant #380835 ΔE 0.057
- Mahogany #4A0100 ΔE 0.060
Use #37151F 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.