#231C2B
Closest named color: Dark (#1B2431). oklch(24.2% 0.03 305.6), rgb(35, 28, 43).
Aa
White text reads best on this color (16.50:1).
About this color
#231C2B is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.029 away. White text reads best on it, at 16.50:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.27:1 |
| White text | 16.50:1 |
Values
| HEX | #231C2B |
| RGB | rgb(35, 28, 43) |
| HSL | hsl(268, 21%, 14%) |
| OKLCH | oklch(24.2% 0.03 305.6) |
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 #231C2B | 16.50:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #231C2B | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #231C2B text on white | 16.50:1 | AAA | Lc 103.4 | Preferred for body text |
| #231C2B 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EBE8EF
oklch(93.5% 0.01 305.4)
-
Step 200
200
#DCD6E4
oklch(88.5% 0.02 305.2)
-
Step 300
300
#C6BBD3
oklch(80.9% 0.035 306.2)
-
Step 400
400
#A998BD
oklch(70.7% 0.056 305.8)
-
Step 500
500
#947EAD
oklch(63% 0.073 305.7)
-
Step 600
600
#7E6798
oklch(55.5% 0.079 305.5)
-
Step 700
700
#6B5682
oklch(49.2% 0.073 305.7)
-
Step 800
800
#574669
oklch(42.6% 0.06 306.2)
-
Step 900
900
#483B56
oklch(37.7% 0.048 306.2)
-
Step 950
950 (this color)
#231C2B
oklch(24.2% 0.03 305.6)
#231C2B 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) | #191F2C | 0.020 |
| Deuteranopia (no green cones) | #1B1F2B | 0.017 |
| Tritanopia (no blue cones) | #221E21 | 0.023 |
| Achromatopsia (no color) | #1F1F1F | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231C2B
#231C2B
oklch(24.2% 0.03 305.6)
- #1C2212
#1C2212
oklch(24.1% 0.03 125.3)
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 #231C2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.029
- Jet #212529 ΔE 0.033
- Rich Black #0D1B2A ΔE 0.039
- Oxford Blue #1B263B ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.066
- Eggplant #380835 ΔE 0.070
- Dark Brown #341C02 ΔE 0.074
- Aubergine #3D0734 ΔE 0.076
Use #231C2B 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.