#331B1B
Closest named color: Dark Brown (#341C02). oklch(25.5% 0.038 20.1), rgb(51, 27, 27).
Aa
White text reads best on this color (15.98:1).
About this color
#331B1B is a dark, muted red. In OKLCH its lightness is 25%, its chroma 0.038 and its hue 20°. 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 15.98:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | muted (0.038) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.31:1 |
| White text | 15.98:1 |
Values
| HEX | #331B1B |
| RGB | rgb(51, 27, 27) |
| HSL | hsl(0, 31%, 15%) |
| OKLCH | oklch(25.5% 0.038 20.1) |
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 #331B1B | 15.98:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #331B1B | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #331B1B text on white | 15.98:1 | AAA | Lc 102.8 | Preferred for body text |
| #331B1B text on black | 1.31:1 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F3E7E6
oklch(93.7% 0.013 23.2)
-
Step 200
200
#E9D3D2
oklch(88.5% 0.025 20.8)
-
Step 300
300
#DDB6B4
oklch(81% 0.045 21.6)
-
Step 400
400
#CA8F8E
oklch(70.7% 0.072 20.1)
-
Step 500
500
#BB7272
oklch(63.1% 0.093 20)
-
Step 600
600
#A6595A
oklch(55.5% 0.101 20)
-
Step 700
700
#8E494A
oklch(49% 0.093 20.2)
-
Step 800
800
#743C3D
oklch(42.7% 0.079 19.8)
-
Step 900
900
#5E3434
oklch(37.8% 0.061 20.3)
-
Step 950
950 (this color)
#331B1B
oklch(25.5% 0.038 20.1)
#331B1B 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) | #201F1B | 0.040 |
| Deuteranopia (no green cones) | #26231B | 0.036 |
| Tritanopia (no blue cones) | #37181B | 0.012 |
| Achromatopsia (no color) | #222222 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331B1B
#331B1B
oklch(25.5% 0.038 20.1)
- #06282A
#06282A
oklch(25.4% 0.038 200.7)
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 #331B1B, 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 0.045
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.058
- Deep Brown #410200 ΔE 0.060
- Dark Maroon #3C0008 ΔE 0.060
- Mahogany #4A0100 ΔE 0.067
- Oxford Blue #1B263B ΔE 0.070
Use #331B1B 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.