#4B4151
Closest named color: Charcoal Grey (#3C4142). oklch(39.2% 0.03 312.8), rgb(75, 65, 81).
Aa
White text reads best on this color (9.65:1).
About this color
#4B4151 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.038 away. White text reads best on it, at 9.65:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #4B4151 |
| RGB | rgb(75, 65, 81) |
| HSL | hsl(278, 11%, 29%) |
| OKLCH | oklch(39.2% 0.03 312.8) |
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 #4B4151 | 9.65:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #4B4151 | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #4B4151 text on white | 9.65:1 | AAA | Lc 92.4 | Preferred for body text |
| #4B4151 text on black | 2.17:1 | Fails | Lc -10.0 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9ED
oklch(93.7% 0.006 308.4)
-
Step 200
200
#DCD7DF
oklch(88.5% 0.012 313.2)
-
Step 300
300
#C6BDCB
oklch(81% 0.022 313.8)
-
Step 400
400
#A89BB1
oklch(70.8% 0.035 311.6)
-
Step 500
500
#93829D
oklch(63.1% 0.044 313)
-
Step 600
600
#7D6B88
oklch(55.5% 0.049 312.6)
-
Step 700
700
#6A5974
oklch(49.1% 0.047 312.9)
-
Step 800
800
#56495E
oklch(42.7% 0.038 312.5)
-
Step 900
900 (this color)
#4B4151
oklch(39.2% 0.03 312.8)
-
Step 950
950
#2A242D
oklch(27.1% 0.018 314.5)
#4B4151 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) | #3F4452 | 0.021 |
| Deuteranopia (no green cones) | #414550 | 0.020 |
| Tritanopia (no blue cones) | #4B4346 | 0.022 |
| Achromatopsia (no color) | #454545 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B4151
#4B4151
oklch(39.2% 0.03 312.8)
- #3F4939
#3F4939
oklch(39.1% 0.029 133.8)
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 #4B4151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.051
- Onyx #343A40 ΔE 0.054
- Charcoal #264653 ΔE 0.054
- Purple Brown #673A3F ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.071
- Dusty Grape #545775 ΔE 0.080
Use #4B4151 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.