#424D42
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.7% 0.023 145.1), rgb(66, 77, 66).
Aa
White text reads best on this color (8.85:1).
About this color
#424D42 is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.029 away. White text reads best on it, at 8.85:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #424D42 |
| RGB | rgb(66, 77, 66) |
| HSL | hsl(120, 8%, 28%) |
| OKLCH | oklch(40.7% 0.023 145.1) |
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 #424D42 | 8.85:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #424D42 | 2.37:1 | Fails | Lc 13.7 | Not readable |
| #424D42 text on white | 8.85:1 | AAA | Lc 90.3 | Preferred for body text |
| #424D42 text on black | 2.37:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D6DAD6
oklch(88.4% 0.007 145.5)
-
Step 300
300
#BBC3BB
oklch(80.9% 0.014 145.4)
-
Step 400
400
#99A499
oklch(70.7% 0.02 145.4)
-
Step 500
500
#808E7F
oklch(63.1% 0.027 143.4)
-
Step 600
600
#697869
oklch(55.6% 0.029 145.2)
-
Step 700
700
#576557
oklch(49% 0.028 145.1)
-
Step 800
800 (this color)
#424D42
oklch(40.7% 0.023 145.1)
-
Step 900
900
#3C443C
oklch(37.7% 0.017 145.2)
-
Step 950
950
#232823
oklch(27% 0.012 145.2)
#424D42 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) | #4E4B41 | 0.019 |
| Deuteranopia (no green cones) | #4C4A43 | 0.018 |
| Tritanopia (no blue cones) | #414C4A | 0.015 |
| Achromatopsia (no color) | #4A4A4A | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424D42
#424D42
oklch(40.7% 0.023 145.1)
- #504550
#504550
oklch(40.6% 0.023 326)
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 #424D42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.042
- Dark Blue Green #005249 ΔE 0.055
- Charcoal #264653 ΔE 0.056
- Dark Teal #014D4E ΔE 0.059
- Deep Teal #00555A ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.063
- Pine #2B5D34 ΔE 0.068
Use #424D42 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.