#37171E
Closest named color: Chocolate Brown (#411900). oklch(25.4% 0.052 7.6), rgb(55, 23, 30).
Aa
White text reads best on this color (16.10:1).
About this color
#37171E is a dark, muted red. In OKLCH its lightness is 25%, its chroma 0.052 and its hue 8°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.050 away. White text reads best on it, at 16.10:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | muted (0.052) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.30:1 |
| White text | 16.10:1 |
Values
| HEX | #37171E |
| RGB | rgb(55, 23, 30) |
| HSL | hsl(347, 41%, 15%) |
| OKLCH | oklch(25.4% 0.052 7.6) |
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 #37171E | 16.10:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #37171E | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #37171E text on white | 16.10:1 | AAA | Lc 102.9 | Preferred for body text |
| #37171E text on black | 1.30:1 | 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
#F5E5E8
oklch(93.5% 0.018 4.5)
-
Step 200
200
#EED0D5
oklch(88.4% 0.034 6.4)
-
Step 300
300
#E4B1B9
oklch(80.9% 0.06 8)
-
Step 400
400
#D58795
oklch(70.8% 0.097 8.2)
-
Step 500
500
#C8667B
oklch(63.1% 0.126 7.8)
-
Step 600
600
#B34C65
oklch(55.7% 0.136 7.5)
-
Step 700
700
#9A3C53
oklch(49.1% 0.127 7.9)
-
Step 800
800
#7D3244
oklch(42.7% 0.105 7.8)
-
Step 900
900
#652D3A
oklch(37.8% 0.082 7.2)
-
Step 950
950 (this color)
#37171E
oklch(25.4% 0.052 7.6)
#37171E 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) | #1D1D1E | 0.056 |
| Deuteranopia (no green cones) | #25231D | 0.052 |
| Tritanopia (no blue cones) | #3C141A | 0.013 |
| Achromatopsia (no color) | #212121 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37171E
#37171E
oklch(25.4% 0.052 7.6)
- #002926
#002926
oklch(25.3% 0.044 187.4)
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 #37171E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.050
- Dark Brown #341C02 ΔE 0.050
- Dark Maroon #3C0008 ΔE 0.051
- Deep Brown #410200 ΔE 0.053
- Jet #212529 ΔE 0.057
- Dark Plum #3F012C ΔE 0.060
- Mahogany #4A0100 ΔE 0.060
- Aubergine #3D0734 ΔE 0.061
Use #37171E 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.