#231D23
Closest named color: Jet (#212529). oklch(24% 0.014 326), rgb(35, 29, 35).
Aa
White text reads best on this color (16.51:1).
About this color
#231D23 is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.014. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.027 away. White text reads best on it, at 16.51:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.27:1 |
| White text | 16.51:1 |
Values
| HEX | #231D23 |
| RGB | rgb(35, 29, 35) |
| HSL | hsl(300, 9%, 13%) |
| OKLCH | oklch(24% 0.014 326) |
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 #231D23 | 16.51:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #231D23 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #231D23 text on white | 16.51:1 | AAA | Lc 103.5 | Preferred for body text |
| #231D23 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE9EC
oklch(93.7% 0.005 325.6)
-
Step 200
200
#DCD7DC
oklch(88.5% 0.009 325.6)
-
Step 300
300
#C7BDC7
oklch(81% 0.018 325.7)
-
Step 400
400
#AA9BAA
oklch(70.7% 0.027 325.9)
-
Step 500
500
#958295
oklch(63% 0.036 326)
-
Step 600
600
#7F6C7F
oklch(55.6% 0.037 326.1)
-
Step 700
700
#6C5A6C
oklch(49.2% 0.036 326.1)
-
Step 800
800
#584A58
oklch(42.8% 0.029 326.1)
-
Step 900
900
#483E48
oklch(37.8% 0.021 326)
-
Step 950
950 (this color)
#231D23
oklch(24% 0.014 326)
#231D23 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) | #1D1E23 | 0.012 |
| Deuteranopia (no green cones) | #1E1F23 | 0.011 |
| Tritanopia (no blue cones) | #231D1F | 0.008 |
| Achromatopsia (no color) | #1F1F1F | 0.014 |
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 #231D23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.027
- Dark #1B2431 ΔE 0.032
- Rich Black #0D1B2A ΔE 0.041
- Oxford Blue #1B263B ΔE 0.048
- Dark Brown #341C02 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.071
- Chocolate Brown #411900 ΔE 0.078
- Gunmetal #293241 ΔE 0.080
Use #231D23 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.