#516566
Closest named color: Slate (#516572). oklch(49.1% 0.024 200.2), rgb(81, 101, 102).
Aa
White text reads best on this color (6.17:1).
About this color
#516566 is a medium-dark close to neutral grey. In OKLCH its lightness is 49%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.020 away. White text reads best on it, at 6.17:1.
| Hue family | Neutrals |
| Lightness | medium-dark (49%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.40:1 |
| White text | 6.17:1 |
Values
| HEX | #516566 |
| RGB | rgb(81, 101, 102) |
| HSL | hsl(183, 11%, 36%) |
| OKLCH | oklch(49.1% 0.024 200.2) |
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 #516566 | 6.17:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #516566 | 3.40:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #516566 text on white | 6.17:1 | AA | Lc 80.8 | Fine for body text |
| #516566 text on black | 3.40:1 | AA large text | Lc -21.1 | 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
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADB
oklch(88.4% 0.007 208.8)
-
Step 300
300
#B8C3C3
oklch(80.9% 0.012 196.9)
-
Step 400
400
#94A4A5
oklch(70.6% 0.018 201.3)
-
Step 500
500
#798E8F
oklch(63.1% 0.024 200.1)
-
Step 600
600
#627879
oklch(55.5% 0.026 199.8)
-
Step 700
700 (this color)
#516566
oklch(49.1% 0.024 200.2)
-
Step 800
800
#435253
oklch(42.6% 0.019 201.4)
-
Step 900
900
#384445
oklch(37.6% 0.016 202.7)
-
Step 950
950
#212828
oklch(27% 0.01 196.6)
#516566 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) | #626366 | 0.025 |
| Deuteranopia (no green cones) | #5E6066 | 0.023 |
| Tritanopia (no blue cones) | #4B6765 | 0.010 |
| Achromatopsia (no color) | #616161 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516566
#516566
oklch(49.1% 0.024 200.2)
- #6E5B5B
#6E5B5B
oklch(49% 0.025 18)
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 #516566, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.020
- Dim Gray #696969 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.055
- Dusty Grape #545775 ΔE 0.056
- Dark Aqua #05696B ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.061
- Deep Turquoise #017374 ΔE 0.063
- Dark Aquamarine #017371 ΔE 0.063
Use #516566 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.