#10231C
Closest named color: Jet (#212529). oklch(23.7% 0.029 168.2), rgb(16, 35, 28).
Aa
White text reads best on this color (16.41:1).
About this color
#10231C is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.038 away. White text reads best on it, at 16.41:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.27:1 |
| White text | 16.41:1 |
Values
| HEX | #10231C |
| RGB | rgb(16, 35, 28) |
| HSL | hsl(158, 37%, 10%) |
| OKLCH | oklch(23.7% 0.029 168.2) |
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 #10231C | 16.41:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #10231C | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #10231C text on white | 16.41:1 | AAA | Lc 103.3 | Preferred for body text |
| #10231C 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CEDDD7
oklch(88.5% 0.018 170)
-
Step 300
300
#ACC8BC
oklch(80.9% 0.035 167.7)
-
Step 400
400
#80AC9A
oklch(70.7% 0.054 167.7)
-
Step 500
500
#5E9782
oklch(63.1% 0.068 168.8)
-
Step 600
600
#42826B
oklch(55.7% 0.076 168)
-
Step 700
700
#336E59
oklch(49.2% 0.071 167.7)
-
Step 800
800
#2B5949
oklch(42.6% 0.058 168.7)
-
Step 900
900
#28493D
oklch(37.6% 0.044 168.6)
-
Step 950
950 (this color)
#10231C
oklch(23.7% 0.029 168.2)
#10231C 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) | #22211C | 0.029 |
| Deuteranopia (no green cones) | #1F1E1C | 0.029 |
| Tritanopia (no blue cones) | #0A2321 | 0.011 |
| Achromatopsia (no color) | #1F1F1F | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10231C
#10231C
oklch(23.7% 0.029 168.2)
- #291921
#291921
oklch(23.7% 0.029 348.1)
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 #10231C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.038
- Dark #1B2431 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.047
- Dark Forest Green #002D04 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.062
- Very Dark Green #062E03 ΔE 0.064
- Dark Brown #341C02 ΔE 0.069
- Rich Navy #001219 ΔE 0.074
Use #10231C 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.