#4B4550
Closest named color: Charcoal Grey (#3C4142). oklch(40% 0.02 309.8), rgb(75, 69, 80).
Aa
White text reads best on this color (9.26:1).
About this color
#4B4550 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.037 away. White text reads best on it, at 9.26:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #4B4550 |
| RGB | rgb(75, 69, 80) |
| HSL | hsl(273, 7%, 29%) |
| OKLCH | oklch(40% 0.02 309.8) |
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 #4B4550 | 9.26:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #4B4550 | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #4B4550 text on white | 9.26:1 | AAA | Lc 91.4 | Preferred for body text |
| #4B4550 text on black | 2.26:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EBE9EC
oklch(93.6% 0.005 314.8)
-
Step 200
200
#DBD8DD
oklch(88.6% 0.007 312.3)
-
Step 300
300
#C3BEC8
oklch(80.9% 0.015 308.3)
-
Step 400
400
#A59DAC
oklch(70.8% 0.023 309.5)
-
Step 500
500
#8F8598
oklch(63.2% 0.03 309)
-
Step 600
600
#796E82
oklch(55.5% 0.033 309.9)
-
Step 700
700
#665C6E
oklch(49.1% 0.031 310.1)
-
Step 800
800
#534B5A
oklch(42.6% 0.026 309.2)
-
Step 900
900 (this color)
#4B4550
oklch(40% 0.02 309.8)
-
Step 950
950
#28252B
oklch(27% 0.012 308)
#4B4550 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) | #434751 | 0.014 |
| Deuteranopia (no green cones) | #454750 | 0.011 |
| Tritanopia (no blue cones) | #4B4649 | 0.013 |
| Achromatopsia (no color) | #474747 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B4550
#4B4550
oklch(40% 0.02 309.8)
- #444A3F
#444A3F
oklch(40% 0.02 130.7)
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 #4B4550, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.051
- Charcoal #264653 ΔE 0.052
- Purple Brown #673A3F ΔE 0.058
- Onyx #343A40 ΔE 0.058
- Dusty Grape #545775 ΔE 0.074
- Dark Blue Grey #1F3B4D ΔE 0.076
Use #4B4550 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.