#231A17
Closest named color: Jet (#212529). oklch(22.8% 0.016 39.2), rgb(35, 26, 23).
Aa
White text reads best on this color (17.05:1).
About this color
#231A17 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.042 away. White text reads best on it, at 17.05:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.23:1 |
| White text | 17.05:1 |
Values
| HEX | #231A17 |
| RGB | rgb(35, 26, 23) |
| HSL | hsl(15, 21%, 11%) |
| OKLCH | oklch(22.8% 0.016 39.2) |
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 #231A17 | 17.05:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #231A17 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #231A17 text on white | 17.05:1 | AAA | Lc 103.9 | Preferred for body text |
| #231A17 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EDE9E7
oklch(93.7% 0.005 48.7)
-
Step 200
200
#DFD7D4
oklch(88.5% 0.01 41.9)
-
Step 300
300
#CCBDB8
oklch(80.9% 0.018 39.4)
-
Step 400
400
#B29B93
oklch(70.8% 0.03 40.1)
-
Step 500
500
#9E8279
oklch(63% 0.037 38.6)
-
Step 600
600
#896C62
oklch(55.7% 0.04 39.9)
-
Step 700
700
#745A51
oklch(49.1% 0.037 40)
-
Step 800
800
#5F4942
oklch(42.7% 0.032 38.4)
-
Step 900
900
#4E3D38
oklch(37.7% 0.025 37)
-
Step 950
950 (this color)
#231A17
oklch(22.8% 0.016 39.2)
#231A17 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) | #1C1B17 | 0.014 |
| Deuteranopia (no green cones) | #1E1D17 | 0.014 |
| Tritanopia (no blue cones) | #251919 | 0.007 |
| Achromatopsia (no color) | #1C1C1C | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231A17
#231A17
oklch(22.8% 0.016 39.2)
- #141E21
#141E21
oklch(22.7% 0.015 218.2)
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 #231A17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.042
- Dark Brown #341C02 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.050
- Dark #1B2431 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.069
- Chocolate Brown #411900 ΔE 0.071
- Rich Navy #001219 ΔE 0.075
- Dark Maroon #3C0008 ΔE 0.076
Use #231A17 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.