#424F41
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.2% 0.028 143.1), rgb(66, 79, 65).
Aa
White text reads best on this color (8.65:1).
About this color
#424F41 is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.028. 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 8.65:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #424F41 |
| RGB | rgb(66, 79, 65) |
| HSL | hsl(116, 10%, 28%) |
| OKLCH | oklch(41.2% 0.028 143.1) |
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 #424F41 | 8.65:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #424F41 | 2.42:1 | Fails | Lc 14.3 | Not readable |
| #424F41 text on white | 8.65:1 | AAA | Lc 89.7 | Fine for body text |
| #424F41 text on black | 2.42:1 | Fails | Lc -12.5 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE8
oklch(93.7% 0.005 145.5)
-
Step 200
200
#D6DBD5
oklch(88.6% 0.01 140.5)
-
Step 300
300
#BBC3BA
oklch(80.8% 0.015 142.2)
-
Step 400
400
#97A596
oklch(70.6% 0.027 143.4)
-
Step 500
500
#7E8F7C
oklch(63.1% 0.034 142.3)
-
Step 600
600
#677966
oklch(55.6% 0.036 143.7)
-
Step 700
700
#566654
oklch(49.1% 0.034 142)
-
Step 800
800 (this color)
#424F41
oklch(41.2% 0.028 143.1)
-
Step 900
900
#3B453A
oklch(37.8% 0.023 142.6)
-
Step 950
950
#232822
oklch(27% 0.013 140.5)
#424F41 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) | #504C40 | 0.023 |
| Deuteranopia (no green cones) | #4E4B42 | 0.022 |
| Tritanopia (no blue cones) | #414E4B | 0.018 |
| Achromatopsia (no color) | #4C4C4C | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424F41
#424F41
oklch(41.2% 0.028 143.1)
- #534654
#534654
oklch(41.3% 0.028 323.8)
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 #424F41, 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 0.049
- Dark Blue Green #005249 ΔE 0.055
- Deep Teal #00555A ΔE 0.060
- Dark Teal #014D4E ΔE 0.061
- Charcoal #264653 ΔE 0.061
- Pine #2B5D34 ΔE 0.061
- Dark Green Blue #1F6357 ΔE 0.065
Use #424F41 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.