#331F01
Closest named color: Dark Brown (#341C02). oklch(25.9% 0.054 73.5), rgb(51, 31, 1).
Aa
White text reads best on this color (15.70:1).
About this color
#331F01 is a dark, muted brown. In OKLCH its lightness is 26%, its chroma 0.054 and its hue 74°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.010 away. White text reads best on it, at 15.70:1.
| Hue family | Browns |
| Lightness | dark (26%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.33:1 |
| White text | 15.70:1 |
Values
| HEX | #331F01 |
| RGB | rgb(51, 31, 1) |
| HSL | hsl(36, 96%, 10%) |
| OKLCH | oklch(25.9% 0.054 73.5) |
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 #331F01 | 15.70:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #331F01 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #331F01 text on white | 15.70:1 | AAA | Lc 102.5 | Preferred for body text |
| #331F01 text on black | 1.33:1 | 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
#F9F5EF
oklch(97.2% 0.009 78.3)
-
Step 100
100
#F2E8DD
oklch(93.6% 0.018 70.2)
-
Step 200
200
#E8D6C0
oklch(88.5% 0.036 72.9)
-
Step 300
300
#DABB94
oklch(80.9% 0.063 73.1)
-
Step 400
400
#C79755
oklch(70.8% 0.102 73.7)
-
Step 500
500
#B87B11
oklch(63.1% 0.13 73.2)
-
Step 600
600
#9C6700
oklch(55.7% 0.118 73.9)
-
Step 700
700
#845600
oklch(49.2% 0.105 73.4)
-
Step 800
800
#6C4600
oklch(42.7% 0.091 73.9)
-
Step 900
900
#5B3A00
oklch(37.8% 0.08 73.5)
-
Step 950
950 (this color)
#331F01
oklch(25.9% 0.054 73.5)
#331F01 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) | #262000 | 0.028 |
| Deuteranopia (no green cones) | #2B2502 | 0.024 |
| Tritanopia (no blue cones) | #391A19 | 0.044 |
| Achromatopsia (no color) | #232323 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331F01
#331F01
oklch(25.9% 0.054 73.5)
- #0F243D
#0F243D
oklch(25.7% 0.055 254.1)
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 #331F01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.010
- Chocolate Brown #411900 ΔE 0.034
- Jet #212529 ΔE 0.063
- Deep Brown #410200 ΔE 0.069
- Pakistan Green #283618 ΔE 0.073
- Mahogany #4A0100 ΔE 0.076
- Dark Maroon #3C0008 ΔE 0.080
- Very Dark Green #062E03 ΔE 0.080
Use #331F01 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.