#516363
Closest named color: Slate (#516572). oklch(48.5% 0.022 196.5), rgb(81, 99, 99).
Aa
White text reads best on this color (6.33:1).
About this color
#516363 is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.023 away. White text reads best on it, at 6.33:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #516363 |
| RGB | rgb(81, 99, 99) |
| HSL | hsl(180, 10%, 35%) |
| OKLCH | oklch(48.5% 0.022 196.5) |
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 #516363 | 6.33:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #516363 | 3.31:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #516363 text on white | 6.33:1 | AA | Lc 81.5 | Fine for body text |
| #516363 text on black | 3.31:1 | AA large text | Lc -20.3 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D5DADA
oklch(88.5% 0.005 197.1)
-
Step 300
300
#B9C3C3
oklch(80.9% 0.011 196.9)
-
Step 400
400
#95A4A4
oklch(70.7% 0.017 196.8)
-
Step 500
500
#7B8E8E
oklch(63.2% 0.022 196.6)
-
Step 600
600
#647878
oklch(55.7% 0.024 196.5)
-
Step 700
700 (this color)
#516363
oklch(48.5% 0.022 196.5)
-
Step 800
800
#445252
oklch(42.7% 0.018 196.5)
-
Step 900
900
#394444
oklch(37.7% 0.014 196.6)
-
Step 950
950
#222828
oklch(27.1% 0.009 196.7)
#516363 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) | #616163 | 0.024 |
| Deuteranopia (no green cones) | #5D5E63 | 0.022 |
| Tritanopia (no blue cones) | #4C6463 | 0.007 |
| Achromatopsia (no color) | #606060 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516363
#516363
oklch(48.5% 0.022 196.5)
- #6B5A5B
#6B5A5B
oklch(48.5% 0.022 13.9)
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 #516363, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.023
- Dim Gray #696969 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.054
- Dusty Grape #545775 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.059
- Dark Aqua #05696B ΔE 0.059
- Deep Turquoise #017374 ΔE 0.066
- Dark Aquamarine #017371 ΔE 0.066
Use #516363 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.