#231D27
Closest named color: Jet (#212529). oklch(24.2% 0.021 311.7), rgb(35, 29, 39).
Aa
White text reads best on this color (16.45:1).
About this color
#231D27 is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.021. 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 16.45:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.27:1 |
| White text | 16.45:1 |
Values
| HEX | #231D27 |
| RGB | rgb(35, 29, 39) |
| HSL | hsl(276, 15%, 13%) |
| OKLCH | oklch(24.2% 0.021 311.7) |
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 #231D27 | 16.45:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #231D27 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #231D27 text on white | 16.45:1 | AAA | Lc 103.4 | Preferred for body text |
| #231D27 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE8ED
oklch(93.5% 0.007 312.3)
-
Step 200
200
#DCD7E0
oklch(88.6% 0.013 310.5)
-
Step 300
300
#C6BCCC
oklch(80.8% 0.025 313.1)
-
Step 400
400
#A99AB3
oklch(70.7% 0.04 311.9)
-
Step 500
500
#9481A0
oklch(63.1% 0.051 312.3)
-
Step 600
600
#7E6A8B
oklch(55.5% 0.055 311.9)
-
Step 700
700
#6A5976
oklch(49.2% 0.05 311)
-
Step 800
800
#574960
oklch(42.8% 0.041 312)
-
Step 900
900
#473D4E
oklch(37.7% 0.031 311.3)
-
Step 950
950 (this color)
#231D27
oklch(24.2% 0.021 311.7)
#231D27 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) | #1C1F27 | 0.014 |
| Deuteranopia (no green cones) | #1D1F27 | 0.013 |
| Tritanopia (no blue cones) | #231E20 | 0.015 |
| Achromatopsia (no color) | #1F1F1F | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231D27
#231D27
oklch(24.2% 0.021 311.7)
- #1C2218
#1C2218
oklch(24.2% 0.02 133)
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 #231D27, 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 0.028
- Rich Black #0D1B2A ΔE 0.040
- Oxford Blue #1B263B ΔE 0.043
- Dark Brown #341C02 ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.067
- Eggplant #380835 ΔE 0.076
- Gunmetal #293241 ΔE 0.077
Use #231D27 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.