#515C58
Closest named color: Slate (#516572). oklch(46.4% 0.015 171.8), rgb(81, 92, 88).
Aa
White text reads best on this color (6.94:1).
About this color
#515C58 is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.043 away. White text reads best on it, at 6.94:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.02:1 |
| White text | 6.94:1 |
Values
| HEX | #515C58 |
| RGB | rgb(81, 92, 88) |
| HSL | hsl(158, 6%, 34%) |
| OKLCH | oklch(46.4% 0.015 171.8) |
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 #515C58 | 6.94:1 | AA | Lc -89.0 | Fine for body text |
| Black text on #515C58 | 3.02:1 | AA large text | Lc 20.0 | Dividers and decoration only |
| #515C58 text on white | 6.94:1 | AA | Lc 84.1 | Fine for body text |
| #515C58 text on black | 3.02:1 | AA large text | Lc -17.9 | 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
#D6DAD9
oklch(88.5% 0.005 179.7)
-
Step 300
300
#BCC2C0
oklch(80.9% 0.007 174.3)
-
Step 400
400
#9AA3A0
oklch(70.7% 0.011 174.1)
-
Step 500
500
#818D88
oklch(63.2% 0.016 168.9)
-
Step 600
600
#6A7772
oklch(55.7% 0.017 170.6)
-
Step 700
700 (this color)
#515C58
oklch(46.4% 0.015 171.8)
-
Step 800
800
#48514E
oklch(42.6% 0.013 173.7)
-
Step 900
900
#3D4341
oklch(37.7% 0.009 173.9)
-
Step 950
950
#242726
oklch(26.9% 0.005 174.1)
#515C58 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) | #5B5A58 | 0.016 |
| Deuteranopia (no green cones) | #595958 | 0.015 |
| Tritanopia (no blue cones) | #4F5C5B | 0.005 |
| Achromatopsia (no color) | #5A5A5A | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515C58
#515C58
oklch(46.4% 0.015 171.8)
- #60565A
#60565A
oklch(46.4% 0.014 351.5)
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 #515C58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.043
- Dusty Grape #545775 ΔE 0.055
- Dark Green Blue #1F6357 ΔE 0.056
- YInMn Blue #415A77 ΔE 0.056
- Dim Gray #696969 ΔE 0.059
- Dark Slate Gray #2F4F4F ΔE 0.066
- Dark Aqua #05696B ΔE 0.067
- Petrol #005F6A ΔE 0.068
Use #515C58 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.