#4B555F
Closest named color: YInMn Blue (#415A77). oklch(44.4% 0.021 248.3), rgb(75, 85, 95).
Aa
White text reads best on this color (7.59:1).
About this color
#4B555F 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 YInMn Blue (#415A77), ΔE 0.039 away. White text reads best on it, at 7.59:1.
| Hue family | Neutrals |
| Lightness | dark (44%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #4B555F |
| RGB | rgb(75, 85, 95) |
| HSL | hsl(210, 12%, 33%) |
| OKLCH | oklch(44.4% 0.021 248.3) |
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 #4B555F | 7.59:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #4B555F | 2.76:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #4B555F text on white | 7.59:1 | AAA | Lc 86.4 | Fine for body text |
| #4B555F text on black | 2.76:1 | Fails | Lc -15.7 | 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
#F4F5F6
oklch(97% 0.002 247.8)
-
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
#BBC1C8
oklch(80.8% 0.012 252.1)
-
Step 400
400
#97A2AC
oklch(70.7% 0.019 245.5)
-
Step 500
500
#7E8B98
oklch(63.1% 0.025 248.2)
-
Step 600
600
#677583
oklch(55.6% 0.028 248.3)
-
Step 700
700
#56626F
oklch(49.1% 0.026 250.5)
-
Step 800
800 (this color)
#4B555F
oklch(44.4% 0.021 248.3)
-
Step 900
900
#3B424A
oklch(37.6% 0.017 251.8)
-
Step 950
950
#23272B
oklch(27% 0.009 248.2)
#4B555F 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) | #515560 | 0.009 |
| Deuteranopia (no green cones) | #4F535F | 0.008 |
| Tritanopia (no blue cones) | #465758 | 0.017 |
| Achromatopsia (no color) | #545454 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B555F
#4B555F
oklch(44.4% 0.021 248.3)
- #5C5248
#5C5248
oklch(44.5% 0.021 67.3)
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 #4B555F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.039
- Dusty Grape #545775 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.051
- Slate #516572 ΔE 0.052
- Dusk #4E5481 ΔE 0.059
- Petrol #005F6A ΔE 0.062
- Dark Green Blue #1F6357 ΔE 0.066
- Deep Teal #00555A ΔE 0.067
Use #4B555F 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.