#424952
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.2% 0.018 254.7), rgb(66, 73, 82).
Aa
White text reads best on this color (9.10:1).
About this color
#424952 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.032 away. White text reads best on it, at 9.10:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #424952 |
| RGB | rgb(66, 73, 82) |
| HSL | hsl(214, 11%, 29%) |
| OKLCH | oklch(40.2% 0.018 254.7) |
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 #424952 | 9.10:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #424952 | 2.30:1 | Fails | Lc 13.0 | Not readable |
| #424952 text on white | 9.10:1 | AAA | Lc 91.0 | Preferred for body text |
| #424952 text on black | 2.30:1 | Fails | Lc -11.4 | 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 800.
-
Step 50
50
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6D9DD
oklch(88.4% 0.006 255.5)
-
Step 300
300
#BCC1C7
oklch(80.9% 0.01 252.8)
-
Step 400
400
#9AA1AB
oklch(70.7% 0.017 257.2)
-
Step 500
500
#818A96
oklch(63% 0.021 255.6)
-
Step 600
600
#6A7481
oklch(55.5% 0.024 255)
-
Step 700
700
#59626D
oklch(49.2% 0.021 253.5)
-
Step 800
800 (this color)
#424952
oklch(40.2% 0.018 254.7)
-
Step 900
900
#3D4249
oklch(37.7% 0.014 256.8)
-
Step 950
950
#24272B
oklch(27.1% 0.009 255.6)
#424952 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) | #464952 | 0.006 |
| Deuteranopia (no green cones) | #444852 | 0.004 |
| Tritanopia (no blue cones) | #3E4B4C | 0.015 |
| Achromatopsia (no color) | #484848 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424952
#424952
oklch(40.2% 0.018 254.7)
- #4E473E
#4E473E
oklch(40.2% 0.017 74.2)
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 #424952, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.040
- Onyx #343A40 ΔE 0.058
- Deep Teal #00555A ΔE 0.061
- Dark Teal #014D4E ΔE 0.061
- Dark Blue Green #005249 ΔE 0.068
Use #424952 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.