#4B554F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.9% 0.016 159.4), rgb(75, 85, 79).
Aa
White text reads best on this color (7.74:1).
About this color
#4B554F is a dark close to neutral grey. In OKLCH its lightness is 44%, its chroma 0.016. 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 7.74:1.
| Hue family | Neutrals |
| Lightness | dark (44%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #4B554F |
| RGB | rgb(75, 85, 79) |
| HSL | hsl(144, 6%, 31%) |
| OKLCH | oklch(43.9% 0.016 159.4) |
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 #4B554F | 7.74:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #4B554F | 2.71:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #4B554F text on white | 7.74:1 | AAA | Lc 86.9 | Fine for body text |
| #4B554F text on black | 2.71:1 | Fails | Lc -15.2 | 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
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D6DAD8
oklch(88.5% 0.005 165)
-
Step 300
300
#BCC2BE
oklch(80.8% 0.009 157)
-
Step 400
400
#99A49D
oklch(70.8% 0.016 158.1)
-
Step 500
500
#808D85
oklch(63% 0.019 158.8)
-
Step 600
600
#69776F
oklch(55.5% 0.021 160.7)
-
Step 700
700
#58645D
oklch(49.1% 0.018 160.1)
-
Step 800
800 (this color)
#4B554F
oklch(43.9% 0.016 159.4)
-
Step 900
900
#3C443F
oklch(37.8% 0.013 158.3)
-
Step 950
950
#232825
oklch(27.1% 0.009 159.4)
#4B554F 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) | #55534F | 0.016 |
| Deuteranopia (no green cones) | #53524F | 0.015 |
| Tritanopia (no blue cones) | #495553 | 0.007 |
| Achromatopsia (no color) | #535353 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B554F
#4B554F
oklch(43.9% 0.016 159.4)
- #594F55
#594F55
oklch(43.9% 0.016 341.1)
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 #4B554F, 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
- YInMn Blue #415A77 ΔE 0.063
- Dusty Grape #545775 ΔE 0.065
- Slate #516572 ΔE 0.065
- Deep Teal #00555A ΔE 0.066
- Petrol #005F6A ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.069
Use #4B554F 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.