#515F54
Closest named color: Slate (#516572). oklch(47% 0.025 151.7), rgb(81, 95, 84).
Aa
White text reads best on this color (6.74:1).
About this color
#515F54 is a medium-dark close to neutral grey. In OKLCH its lightness is 47%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.046 away. White text reads best on it, at 6.74:1.
| Hue family | Neutrals |
| Lightness | medium-dark (47%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.11:1 |
| White text | 6.74:1 |
Values
| HEX | #515F54 |
| RGB | rgb(81, 95, 84) |
| HSL | hsl(133, 8%, 35%) |
| OKLCH | oklch(47% 0.025 151.7) |
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 #515F54 | 6.74:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #515F54 | 3.11:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #515F54 text on white | 6.74:1 | AA | Lc 83.2 | Fine for body text |
| #515F54 text on black | 3.11:1 | AA large text | Lc -18.7 | 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 700.
-
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
#D6DAD7
oklch(88.4% 0.006 153.8)
-
Step 300
300
#BBC3BD
oklch(80.9% 0.012 153.6)
-
Step 400
400
#98A49B
oklch(70.6% 0.019 153.4)
-
Step 500
500
#7F8E82
oklch(63.1% 0.025 151.4)
-
Step 600
600
#68786C
oklch(55.6% 0.026 153)
-
Step 700
700 (this color)
#515F54
oklch(47% 0.025 151.7)
-
Step 800
800
#475249
oklch(42.6% 0.02 150.7)
-
Step 900
900
#3C443D
oklch(37.7% 0.016 148.9)
-
Step 950
950
#232824
oklch(27% 0.01 151.4)
#515F54 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) | #5F5C53 | 0.022 |
| Deuteranopia (no green cones) | #5D5B55 | 0.022 |
| Tritanopia (no blue cones) | #4F5E5C | 0.014 |
| Achromatopsia (no color) | #5B5B5B | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515F54
#515F54
oklch(47% 0.025 151.7)
- #635661
#635661
oklch(47% 0.024 331)
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 #515F54, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.046
- Dark Green Blue #1F6357 ΔE 0.052
- Dim Gray #696969 ΔE 0.056
- Dark Aqua #05696B ΔE 0.064
- YInMn Blue #415A77 ΔE 0.067
- Dusty Grape #545775 ΔE 0.067
- Dark Moss Green #606C38 ΔE 0.068
- Petrol #005F6A ΔE 0.071
Use #515F54 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.