#4B554B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.7% 0.021 145.2), rgb(75, 85, 75).
Aa
White text reads best on this color (7.77:1).
About this color
#4B554B is a dark close to neutral grey. In OKLCH its lightness is 44%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.045 away. White text reads best on it, at 7.77:1.
| Hue family | Neutrals |
| Lightness | dark (44%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.70:1 |
| White text | 7.77:1 |
Values
| HEX | #4B554B |
| RGB | rgb(75, 85, 75) |
| HSL | hsl(120, 6%, 31%) |
| OKLCH | oklch(43.7% 0.021 145.2) |
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 #4B554B | 7.77:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #4B554B | 2.70:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #4B554B text on white | 7.77:1 | AAA | Lc 87.0 | Fine for body text |
| #4B554B text on black | 2.70:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#BCC3BC
oklch(81% 0.012 145.5)
-
Step 400
400
#99A499
oklch(70.7% 0.02 145.4)
-
Step 500
500
#818E81
oklch(63.2% 0.024 145.3)
-
Step 600
600
#6A786A
oklch(55.7% 0.027 145.2)
-
Step 700
700
#586558
oklch(49.2% 0.026 145.2)
-
Step 800
800 (this color)
#4B554B
oklch(43.7% 0.021 145.2)
-
Step 900
900
#3C443C
oklch(37.7% 0.017 145.2)
-
Step 950
950
#232823
oklch(27% 0.012 145.2)
#4B554B 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) | #55534A | 0.016 |
| Deuteranopia (no green cones) | #54524B | 0.016 |
| Tritanopia (no blue cones) | #4A5452 | 0.013 |
| Achromatopsia (no color) | #525252 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B554B
#4B554B
oklch(43.7% 0.021 145.2)
- #584E58
#584E58
oklch(43.7% 0.021 325.9)
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 #4B554B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.057
- Pine #2B5D34 ΔE 0.066
- Deep Teal #00555A ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.069
- YInMn Blue #415A77 ΔE 0.069
- Slate #516572 ΔE 0.069
- Petrol #005F6A ΔE 0.070
Use #4B554B 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.