#231B05
Closest named color: Dark Brown (#341C02). oklch(22.6% 0.038 89.6), rgb(35, 27, 5).
Aa
White text reads best on this color (17.06:1).
About this color
#231B05 is a very dark, muted brown. In OKLCH its lightness is 23%, its chroma 0.038 and its hue 90°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.037 away. White text reads best on it, at 17.06:1.
| Hue family | Browns |
| Lightness | very dark (23%) |
| Chroma | muted (0.038) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.23:1 |
| White text | 17.06:1 |
Values
| HEX | #231B05 |
| RGB | rgb(35, 27, 5) |
| HSL | hsl(44, 75%, 8%) |
| OKLCH | oklch(22.6% 0.038 89.6) |
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 #231B05 | 17.06:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #231B05 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #231B05 text on white | 17.06:1 | AAA | Lc 103.9 | Preferred for body text |
| #231B05 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EDEAE0
oklch(93.7% 0.014 93)
-
Step 200
200
#DFD9C7
oklch(88.5% 0.025 91.6)
-
Step 300
300
#CCC0A0
oklch(80.9% 0.045 89.9)
-
Step 400
400
#B29F6C
oklch(70.7% 0.072 89.9)
-
Step 500
500
#9F8743
oklch(63.1% 0.092 90.2)
-
Step 600
600
#8A7020
oklch(55.6% 0.101 90.1)
-
Step 700
700
#765D12
oklch(49% 0.093 88.7)
-
Step 800
800
#604D13
oklch(42.9% 0.078 89.9)
-
Step 900
900
#4E4018
oklch(37.7% 0.06 89.9)
-
Step 950
950 (this color)
#231B05
oklch(22.6% 0.038 89.6)
#231B05 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) | #1F1B03 | 0.010 |
| Deuteranopia (no green cones) | #211D06 | 0.007 |
| Tritanopia (no blue cones) | #271816 | 0.034 |
| Achromatopsia (no color) | #1C1C1C | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231B05
#231B05
oklch(22.6% 0.038 89.6)
- #151B2E
#151B2E
oklch(22.6% 0.038 269.8)
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 #231B05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.037
- Jet #212529 ΔE 0.059
- Chocolate Brown #411900 ΔE 0.066
- Dark #1B2431 ΔE 0.073
- Rich Black #0D1B2A ΔE 0.073
- Dark Forest Green #002D04 ΔE 0.076
- Very Dark Green #062E03 ΔE 0.076
- Deep Brown #410200 ΔE 0.083
Use #231B05 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.