#231C2A
Closest named color: Dark (#1B2431). oklch(24.1% 0.028 307.2), rgb(35, 28, 42).
Aa
White text reads best on this color (16.52:1).
About this color
#231C2A is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.028. 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 16.52:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.27:1 |
| White text | 16.52:1 |
Values
| HEX | #231C2A |
| RGB | rgb(35, 28, 42) |
| HSL | hsl(270, 20%, 14%) |
| OKLCH | oklch(24.1% 0.028 307.2) |
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 #231C2A | 16.52:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #231C2A | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #231C2A text on white | 16.52:1 | AAA | Lc 103.5 | Preferred for body text |
| #231C2A 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
#DCD6E3
oklch(88.5% 0.019 306.6)
-
Step 300
300
#C6BBD2
oklch(80.8% 0.034 307.1)
-
Step 400
400
#A998BB
oklch(70.6% 0.054 307)
-
Step 500
500
#947FAA
oklch(63.1% 0.068 306.8)
-
Step 600
600
#7F6895
oklch(55.7% 0.073 307.5)
-
Step 700
700
#6B567F
oklch(49% 0.069 307.4)
-
Step 800
800
#574767
oklch(42.7% 0.055 307)
-
Step 900
900
#483B54
oklch(37.6% 0.045 308)
-
Step 950
950 (this color)
#231C2A
oklch(24.1% 0.028 307.2)
#231C2A 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) | #1A1F2B | 0.018 |
| Deuteranopia (no green cones) | #1B1F2A | 0.017 |
| Tritanopia (no blue cones) | #221E21 | 0.021 |
| Achromatopsia (no color) | #1F1F1F | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231C2A
#231C2A
oklch(24.1% 0.028 307.2)
- #1C2213
#1C2213
oklch(24.1% 0.028 126.2)
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 #231C2A, 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 0.032
- Rich Black #0D1B2A ΔE 0.038
- Oxford Blue #1B263B ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.066
- Eggplant #380835 ΔE 0.071
- Dark Brown #341C02 ΔE 0.073
- Aubergine #3D0734 ΔE 0.077
Use #231C2A 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.