#37211D
Closest named color: Dark Brown (#341C02). oklch(27.5% 0.035 30.8), rgb(55, 33, 29).
Aa
White text reads best on this color (15.02:1).
About this color
#37211D is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.035 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.038 away. White text reads best on it, at 15.02:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.035) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.39:1 |
| White text | 15.02:1 |
Values
| HEX | #37211D |
| RGB | rgb(55, 33, 29) |
| HSL | hsl(9, 31%, 16%) |
| OKLCH | oklch(27.5% 0.035 30.8) |
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 #37211D | 15.02:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #37211D | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #37211D text on white | 15.02:1 | AAA | Lc 101.8 | Preferred for body text |
| #37211D text on black | 1.39:1 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F2E7E5
oklch(93.6% 0.012 29.9)
-
Step 200
200
#E8D4D0
oklch(88.5% 0.023 31.1)
-
Step 300
300
#DAB7B1
oklch(80.8% 0.041 29.4)
-
Step 400
400
#C79288
oklch(70.8% 0.066 30.8)
-
Step 500
500
#B7766A
oklch(63.1% 0.085 31)
-
Step 600
600
#A25E52
oklch(55.6% 0.092 30.9)
-
Step 700
700
#8B4D42
oklch(49.1% 0.086 31.1)
-
Step 800
800
#713F37
oklch(42.7% 0.072 30)
-
Step 900
900
#5C362F
oklch(37.7% 0.056 31.1)
-
Step 950
950 (this color)
#37211D
oklch(27.5% 0.035 30.8)
#37211D 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) | #26241D | 0.035 |
| Deuteranopia (no green cones) | #2B281D | 0.032 |
| Tritanopia (no blue cones) | #3C1E20 | 0.016 |
| Achromatopsia (no color) | #272727 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37211D
#37211D
oklch(27.5% 0.035 30.8)
- #102C31
#102C31
oklch(27.4% 0.035 210.8)
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 #37211D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.038
- Chocolate Brown #411900 ΔE 0.041
- Jet #212529 ΔE 0.045
- Dark #1B2431 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.067
- Deep Brown #410200 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.070
- Mahogany #4A0100 ΔE 0.071
Use #37211D 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.