#231C10
Closest named color: Dark Brown (#341C02). oklch(23.1% 0.024 80.6), rgb(35, 28, 16).
Aa
White text reads best on this color (16.86:1).
About this color
#231C10 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dark Brown (#341C02), ΔE 0.039 away. White text reads best on it, at 16.86:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.24:1 |
| White text | 16.86:1 |
Values
| HEX | #231C10 |
| RGB | rgb(35, 28, 16) |
| HSL | hsl(38, 37%, 10%) |
| OKLCH | oklch(23.1% 0.024 80.6) |
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 #231C10 | 16.86:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #231C10 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #231C10 text on white | 16.86:1 | AAA | Lc 103.8 | Preferred for body text |
| #231C10 text on black | 1.24:1 | 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
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EDE9E4
oklch(93.6% 0.008 73.7)
-
Step 200
200
#DFD8CE
oklch(88.5% 0.016 77.1)
-
Step 300
300
#CABFAD
oklch(80.9% 0.028 80.2)
-
Step 400
400
#AF9E81
oklch(70.6% 0.045 81)
-
Step 500
500
#9C8661
oklch(63.1% 0.058 80.3)
-
Step 600
600
#877048
oklch(55.7% 0.063 80.7)
-
Step 700
700
#725D39
oklch(49% 0.059 80.2)
-
Step 800
800
#5D4C30
oklch(42.7% 0.048 79.4)
-
Step 900
900
#4C402A
oklch(37.8% 0.038 82.2)
-
Step 950
950 (this color)
#231C10
oklch(23.1% 0.024 80.6)
#231C10 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) | #1F1C0F | 0.009 |
| Deuteranopia (no green cones) | #211E10 | 0.008 |
| Tritanopia (no blue cones) | #261A19 | 0.021 |
| Achromatopsia (no color) | #1D1D1D | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231C10
#231C10
oklch(23.1% 0.024 80.6)
- #171D29
#171D29
oklch(23.1% 0.025 263.9)
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 #231C10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.039
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.061
- Chocolate Brown #411900 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.076
- Dark Forest Green #002D04 ΔE 0.080
- Very Dark Green #062E03 ΔE 0.081
Use #231C10 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.