#242531
Closest named color: Dark (#1B2431). oklch(26.9% 0.022 281.1), rgb(36, 37, 49).
Aa
White text reads best on this color (15.17:1).
About this color
#242531 is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.016 away. White text reads best on it, at 15.17:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.38:1 |
| White text | 15.17:1 |
Values
| HEX | #242531 |
| RGB | rgb(36, 37, 49) |
| HSL | hsl(235, 15%, 17%) |
| OKLCH | oklch(26.9% 0.022 281.1) |
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 #242531 | 15.17:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #242531 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #242531 text on white | 15.17:1 | AAA | Lc 102.1 | Preferred for body text |
| #242531 text on black | 1.38:1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D7D8E3
oklch(88.5% 0.015 281.9)
-
Step 300
300
#BDBFD2
oklch(80.9% 0.027 281)
-
Step 400
400
#9B9EBB
oklch(70.7% 0.042 280.6)
-
Step 500
500
#8386AA
oklch(63.1% 0.054 281)
-
Step 600
600
#6D7095
oklch(55.7% 0.057 280.7)
-
Step 700
700
#5B5D7F
oklch(49% 0.054 281.6)
-
Step 800
800
#4A4C68
oklch(42.6% 0.046 281.1)
-
Step 900
900
#3E4054
oklch(37.8% 0.034 280.2)
-
Step 950
950 (this color)
#242531
oklch(26.9% 0.022 281.1)
#242531 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) | #222632 | 0.004 |
| Deuteranopia (no green cones) | #212531 | 0.005 |
| Tritanopia (no blue cones) | #212729 | 0.020 |
| Achromatopsia (no color) | #262626 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242531
#242531
oklch(26.9% 0.022 281.1)
- #28271A
#28271A
oklch(27% 0.023 104.1)
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 #242531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.016
- Jet #212529 ΔE 0.017
- Oxford Blue #1B263B ΔE 0.022
- Space Cadet #2B2D42 ΔE 0.039
- Gunmetal #293241 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.055
- Dark Brown #341C02 ΔE 0.075
- Prussian Blue #1D3557 ΔE 0.076
Use #242531 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.