#231B09
Closest named color: Dark Brown (#341C02). oklch(22.7% 0.033 85.7), rgb(35, 27, 9).
Aa
White text reads best on this color (17.04:1).
About this color
#231B09 is a very dark, muted brown. In OKLCH its lightness is 23%, its chroma 0.033 and its hue 86°. 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 17.04:1.
| Hue family | Browns |
| Lightness | very dark (23%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.23:1 |
| White text | 17.04:1 |
Values
| HEX | #231B09 |
| RGB | rgb(35, 27, 9) |
| HSL | hsl(42, 59%, 9%) |
| OKLCH | oklch(22.7% 0.033 85.7) |
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 #231B09 | 17.04:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #231B09 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #231B09 text on white | 17.04:1 | AAA | Lc 103.9 | Preferred for body text |
| #231B09 text on black | 1.23:1 | 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
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EDE9E2
oklch(93.5% 0.01 81.8)
-
Step 200
200
#DFD8CA
oklch(88.4% 0.02 84.6)
-
Step 300
300
#CCBFA5
oklch(80.9% 0.038 84.6)
-
Step 400
400
#B29E74
oklch(70.6% 0.062 85.3)
-
Step 500
500
#9F8650
oklch(63.1% 0.078 85.4)
-
Step 600
600
#8A6F33
oklch(55.5% 0.085 85.1)
-
Step 700
700
#755D25
oklch(49.1% 0.08 85.7)
-
Step 800
800
#5F4C20
oklch(42.6% 0.066 85.9)
-
Step 900
900
#4E4020
oklch(37.8% 0.051 86.3)
-
Step 950
950 (this color)
#231B09
oklch(22.7% 0.033 85.7)
#231B09 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) | #1F1B08 | 0.009 |
| Deuteranopia (no green cones) | #211D0A | 0.007 |
| Tritanopia (no blue cones) | #261817 | 0.030 |
| Achromatopsia (no color) | #1C1C1C | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231B09
#231B09
oklch(22.7% 0.033 85.7)
- #151C2C
#151C2C
oklch(22.8% 0.033 265.7)
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 #231B09, 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 0.055
- Chocolate Brown #411900 ΔE 0.066
- Dark #1B2431 ΔE 0.068
- Rich Black #0D1B2A ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.078
- Very Dark Green #062E03 ΔE 0.079
- Deep Brown #410200 ΔE 0.081
Use #231B09 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.