#37221F
Closest named color: Dark Brown (#341C02). oklch(27.8% 0.033 28.3), rgb(55, 34, 31).
Aa
White text reads best on this color (14.88:1).
About this color
#37221F is a dark, muted red. In OKLCH its lightness is 28%, its chroma 0.033 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.041 away. White text reads best on it, at 14.88:1.
| Hue family | Reds |
| Lightness | dark (28%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.41:1 |
| White text | 14.88:1 |
Values
| HEX | #37221F |
| RGB | rgb(55, 34, 31) |
| HSL | hsl(8, 28%, 17%) |
| OKLCH | oklch(27.8% 0.033 28.3) |
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 #37221F | 14.88:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #37221F | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #37221F text on white | 14.88:1 | AAA | Lc 101.7 | Preferred for body text |
| #37221F text on black | 1.41:1 | 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
#F1E7E6
oklch(93.6% 0.011 24.3)
-
Step 200
200
#E7D4D1
oklch(88.5% 0.022 28.3)
-
Step 300
300
#D9B8B2
oklch(81% 0.039 30.1)
-
Step 400
400
#C5928B
oklch(70.7% 0.063 27.6)
-
Step 500
500
#B5776E
oklch(63.1% 0.08 28.6)
-
Step 600
600
#A05F56
oklch(55.6% 0.087 28.6)
-
Step 700
700
#894E46
oklch(49.1% 0.081 28.6)
-
Step 800
800
#6F403A
oklch(42.6% 0.067 28)
-
Step 900
900
#5A3732
oklch(37.7% 0.051 28.6)
-
Step 950
950 (this color)
#37221F
oklch(27.8% 0.033 28.3)
#37221F 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) | #27251F | 0.033 |
| Deuteranopia (no green cones) | #2C291F | 0.030 |
| Tritanopia (no blue cones) | #3B1F21 | 0.013 |
| Achromatopsia (no color) | #272727 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37221F
#37221F
oklch(27.8% 0.033 28.3)
- #122D31
#122D31
oklch(27.8% 0.034 208.1)
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 #37221F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.041
- Chocolate Brown #411900 ΔE 0.043
- Jet #212529 ΔE 0.044
- Dark #1B2431 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.068
- Gunmetal #293241 ΔE 0.068
- Deep Brown #410200 ΔE 0.073
Use #37221F 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.