#51444B
Closest named color: Charcoal Grey (#3C4142). oklch(40.2% 0.021 344.4), rgb(81, 68, 75).
Aa
White text reads best on this color (9.21:1).
About this color
#51444B is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.041 away. White text reads best on it, at 9.21:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #51444B |
| RGB | rgb(81, 68, 75) |
| HSL | hsl(328, 9%, 29%) |
| OKLCH | oklch(40.2% 0.021 344.4) |
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 #51444B | 9.21:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #51444B | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #51444B text on white | 9.21:1 | AAA | Lc 91.3 | Preferred for body text |
| #51444B text on black | 2.27:1 | Fails | Lc -11.1 | 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 800.
-
Step 50
50
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE9EA
oklch(93.7% 0.003 354.7)
-
Step 200
200
#DDD7DA
oklch(88.5% 0.008 345.4)
-
Step 300
300
#C7BEC2
oklch(81% 0.011 348.5)
-
Step 400
400
#AA9CA3
oklch(70.7% 0.019 345.8)
-
Step 500
500
#95848D
oklch(63.1% 0.024 344.6)
-
Step 600
600
#806D77
oklch(55.6% 0.028 345)
-
Step 700
700
#6C5B64
oklch(49.1% 0.026 344.9)
-
Step 800
800 (this color)
#51444B
oklch(40.2% 0.021 344.4)
-
Step 900
900
#483E44
oklch(37.6% 0.017 341.2)
-
Step 950
950
#2A2428
oklch(26.9% 0.011 338.1)
#51444B 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) | #45464B | 0.021 |
| Deuteranopia (no green cones) | #48484B | 0.019 |
| Tritanopia (no blue cones) | #534446 | 0.009 |
| Achromatopsia (no color) | #484848 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51444B
#51444B
oklch(40.2% 0.021 344.4)
- #3E4C45
#3E4C45
oklch(40.2% 0.021 163.7)
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 #51444B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.041
- Purple Brown #673A3F ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.062
- Charcoal #264653 ΔE 0.063
- Onyx #343A40 ΔE 0.063
- Brownish Purple #76424E ΔE 0.069
- Dusty Grape #545775 ΔE 0.077
Use #51444B 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.