#331B18
Closest named color: Dark Brown (#341C02). oklch(25.4% 0.039 27.8), rgb(51, 27, 24).
Aa
White text reads best on this color (16.02:1).
About this color
#331B18 is a dark, muted red. In OKLCH its lightness is 25%, its chroma 0.039 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.033 away. White text reads best on it, at 16.02:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.31:1 |
| White text | 16.02:1 |
Values
| HEX | #331B18 |
| RGB | rgb(51, 27, 24) |
| HSL | hsl(7, 36%, 15%) |
| OKLCH | oklch(25.4% 0.039 27.8) |
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 #331B18 | 16.02:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #331B18 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #331B18 text on white | 16.02:1 | AAA | Lc 102.9 | Preferred for body text |
| #331B18 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F3E7E5
oklch(93.7% 0.013 28.9)
-
Step 200
200
#EAD3D0
oklch(88.5% 0.026 26.6)
-
Step 300
300
#DDB6B0
oklch(80.9% 0.046 28.3)
-
Step 400
400
#CB8F87
oklch(70.7% 0.075 27.6)
-
Step 500
500
#BC736A
oklch(63.2% 0.094 27.6)
-
Step 600
600
#A75A51
oklch(55.6% 0.103 27.8)
-
Step 700
700
#8F4A42
oklch(49.2% 0.095 27.9)
-
Step 800
800
#743D36
oklch(42.7% 0.078 28.4)
-
Step 900
900
#5E342F
oklch(37.6% 0.062 27.6)
-
Step 950
950 (this color)
#331B18
oklch(25.4% 0.039 27.8)
#331B18 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) | #201E18 | 0.040 |
| Deuteranopia (no green cones) | #262318 | 0.036 |
| Tritanopia (no blue cones) | #38181A | 0.015 |
| Achromatopsia (no color) | #212121 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331B18
#331B18
oklch(25.4% 0.039 27.8)
- #05282C
#05282C
oklch(25.5% 0.039 206.1)
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 #331B18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.033
- Chocolate Brown #411900 ΔE 0.042
- Jet #212529 ΔE 0.047
- Deep Brown #410200 ΔE 0.058
- Dark Maroon #3C0008 ΔE 0.060
- Dark #1B2431 ΔE 0.061
- Mahogany #4A0100 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.074
Use #331B18 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.