#424252
Closest named color: Charcoal Grey (#3C4142). oklch(38.5% 0.027 285.1), rgb(66, 66, 82).
Aa
White text reads best on this color (9.84:1).
About this color
#424252 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.030 away. White text reads best on it, at 9.84:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.13:1 |
| White text | 9.84:1 |
Values
| HEX | #424252 |
| RGB | rgb(66, 66, 82) |
| HSL | hsl(240, 11%, 29%) |
| OKLCH | oklch(38.5% 0.027 285.1) |
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 #424252 | 9.84:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #424252 | 2.13:1 | Fails | Lc 11.1 | Not readable |
| #424252 text on white | 9.84:1 | AAA | Lc 92.9 | Preferred for body text |
| #424252 text on black | 2.13:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E0
oklch(88.5% 0.011 286.2)
-
Step 300
300
#BFBFCE
oklch(80.9% 0.021 285.9)
-
Step 400
400
#9E9EB5
oklch(70.7% 0.033 285.5)
-
Step 500
500
#8686A2
oklch(63% 0.042 285.1)
-
Step 600
600
#70708D
oklch(55.6% 0.045 284.9)
-
Step 700
700
#5E5E78
oklch(49.2% 0.041 284.8)
-
Step 800
800
#4D4D62
oklch(42.9% 0.035 284.8)
-
Step 900
900 (this color)
#424252
oklch(38.5% 0.027 285.1)
-
Step 950
950
#25252F
oklch(26.9% 0.018 285.1)
#424252 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) | #3E4453 | 0.008 |
| Deuteranopia (no green cones) | #3E4352 | 0.007 |
| Tritanopia (no blue cones) | #3F4547 | 0.025 |
| Achromatopsia (no color) | #434343 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424252
#424252
oklch(38.5% 0.027 285.1)
- #464534
#464534
oklch(38.6% 0.027 104.8)
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 #424252, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.036
- Charcoal #264653 ΔE 0.039
- Onyx #343A40 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.058
- Dark Teal #014D4E ΔE 0.070
- Gunmetal #293241 ΔE 0.071
Use #424252 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.