#231F10
Closest named color: Dark Brown (#341C02). oklch(23.9% 0.027 95), rgb(35, 31, 16).
Aa
White text reads best on this color (16.47:1).
About this color
#231F10 is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Dark Brown (#341C02), ΔE 0.037 away. White text reads best on it, at 16.47:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.27:1 |
| White text | 16.47:1 |
Values
| HEX | #231F10 |
| RGB | rgb(35, 31, 16) |
| HSL | hsl(47, 37%, 10%) |
| OKLCH | oklch(23.9% 0.027 95) |
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 #231F10 | 16.47:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #231F10 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #231F10 text on white | 16.47:1 | AAA | Lc 103.4 | Preferred for body text |
| #231F10 text on black | 1.27:1 | 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
#F6F5F2
oklch(97% 0.004 91.4)
-
Step 100
100
#ECEAE3
oklch(93.7% 0.01 93.6)
-
Step 200
200
#DCD9CC
oklch(88.4% 0.018 96.1)
-
Step 300
300
#C7C1AA
oklch(81% 0.032 95)
-
Step 400
400
#AAA17D
oklch(70.7% 0.051 95.7)
-
Step 500
500
#96895C
oklch(63.1% 0.064 93.9)
-
Step 600
600
#807341
oklch(55.6% 0.071 95.2)
-
Step 700
700
#6C6033
oklch(49% 0.065 94.8)
-
Step 800
800
#584F2B
oklch(42.7% 0.054 95.7)
-
Step 900
900
#494127
oklch(37.6% 0.042 92.9)
-
Step 950
950 (this color)
#231F10
oklch(23.9% 0.027 95)
#231F10 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) | #221E0F | 0.004 |
| Deuteranopia (no green cones) | #232011 | 0.003 |
| Tritanopia (no blue cones) | #261D1B | 0.024 |
| Achromatopsia (no color) | #1F1F1F | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231F10
#231F10
oklch(23.9% 0.027 95)
- #1B1E2C
#1B1E2C
oklch(23.9% 0.027 274.8)
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 #231F10, 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 0.042
- Dark #1B2431 ΔE 0.057
- Chocolate Brown #411900 ΔE 0.064
- Rich Black #0D1B2A ΔE 0.065
- Very Dark Green #062E03 ΔE 0.071
- Dark Forest Green #002D04 ΔE 0.071
- Oxford Blue #1B263B ΔE 0.075
Use #231F10 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.