#231C17
Closest named color: Jet (#212529). oklch(23.3% 0.014 57.5), rgb(35, 28, 23).
Aa
White text reads best on this color (16.80:1).
About this color
#231C17 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.014. 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 16.80:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.24:1 |
| White text | 16.80:1 |
Values
| HEX | #231C17 |
| RGB | rgb(35, 28, 23) |
| HSL | hsl(25, 21%, 11%) |
| OKLCH | oklch(23.3% 0.014 57.5) |
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 #231C17 | 16.80:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #231C17 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #231C17 text on white | 16.80:1 | AAA | Lc 103.7 | Preferred for body text |
| #231C17 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#ECE9E7
oklch(93.6% 0.004 56.4)
-
Step 200
200
#DED8D3
oklch(88.6% 0.009 62.6)
-
Step 300
300
#CABEB6
oklch(80.9% 0.018 56.1)
-
Step 400
400
#AE9D90
oklch(70.7% 0.027 59.7)
-
Step 500
500
#9A8575
oklch(63.1% 0.035 59.4)
-
Step 600
600
#856E5E
oklch(55.6% 0.038 56.7)
-
Step 700
700
#715C4D
oklch(49.1% 0.036 57.3)
-
Step 800
800
#5C4B3F
oklch(42.7% 0.03 57)
-
Step 900
900
#4B3F36
oklch(37.7% 0.022 58.9)
-
Step 950
950 (this color)
#231C17
oklch(23.3% 0.014 57.5)
#231C17 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) | #1E1C17 | 0.010 |
| Deuteranopia (no green cones) | #201E17 | 0.009 |
| Tritanopia (no blue cones) | #251B1B | 0.010 |
| Achromatopsia (no color) | #1D1D1D | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #231C17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.038
- Dark Brown #341C02 ΔE 0.045
- Dark #1B2431 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.052
- Oxford Blue #1B263B ΔE 0.066
- Chocolate Brown #411900 ΔE 0.068
- Rich Navy #001219 ΔE 0.078
- Dark Maroon #3C0008 ΔE 0.080
Use #231C17 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.