#231B01
Closest named color: Dark Brown (#341C02). oklch(22.5% 0.044 92.9), rgb(35, 27, 1).
Aa
White text reads best on this color (17.09:1).
About this color
#231B01 is a very dark, muted brown. In OKLCH its lightness is 23%, its chroma 0.044 and its hue 93°. 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 17.09:1.
| Hue family | Browns |
| Lightness | very dark (23%) |
| Chroma | muted (0.044) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.22:1 |
| White text | 17.09:1 |
Values
| HEX | #231B01 |
| RGB | rgb(35, 27, 1) |
| HSL | hsl(46, 94%, 7%) |
| OKLCH | oklch(22.5% 0.044 92.9) |
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 #231B01 | 17.09:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #231B01 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #231B01 text on white | 17.09:1 | AAA | Lc 103.9 | Preferred for body text |
| #231B01 text on black | 1.22:1 | 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
#F7F5F0
oklch(97% 0.007 88.6)
-
Step 100
100
#EDEADF
oklch(93.6% 0.015 94.2)
-
Step 200
200
#E0D9C4
oklch(88.5% 0.029 91.7)
-
Step 300
300
#CCC09A
oklch(80.8% 0.053 92.6)
-
Step 400
400
#B3A062
oklch(70.8% 0.084 93)
-
Step 500
500
#A08732
oklch(63% 0.107 92.5)
-
Step 600
600
#8A7100
oklch(55.6% 0.114 93.5)
-
Step 700
700
#745E00
oklch(49% 0.1 92.9)
-
Step 800
800
#604D00
oklch(42.7% 0.087 92.5)
-
Step 900
900
#4E400C
oklch(37.6% 0.07 93.1)
-
Step 950
950 (this color)
#231B01
oklch(22.5% 0.044 92.9)
#231B01 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) | #1F1A00 | 0.010 |
| Deuteranopia (no green cones) | #211D02 | 0.007 |
| Tritanopia (no blue cones) | #271815 | 0.039 |
| Achromatopsia (no color) | #1C1C1C | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231B01
#231B01
oklch(22.5% 0.044 92.9)
- #151A30
#151A30
oklch(22.5% 0.044 272.8)
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 #231B01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.038
- Jet #212529 ΔE 0.065
- Chocolate Brown #411900 ΔE 0.067
- Dark Forest Green #002D04 ΔE 0.073
- Very Dark Green #062E03 ΔE 0.073
- Dark #1B2431 ΔE 0.079
- Rich Black #0D1B2A ΔE 0.079
- Deep Brown #410200 ΔE 0.085
Use #231B01 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.