#516A68
Closest named color: Slate (#516572). oklch(50.4% 0.03 190.2), rgb(81, 106, 104).
Aa
White text reads best on this color (5.81:1).
About this color
#516A68 is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.026 away. White text reads best on it, at 5.81:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #516A68 |
| RGB | rgb(81, 106, 104) |
| HSL | hsl(175, 13%, 37%) |
| OKLCH | oklch(50.4% 0.03 190.2) |
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 #516A68 | 5.81:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #516A68 | 3.61:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #516A68 text on white | 5.81:1 | AA | Lc 79.1 | Fine for body text |
| #516A68 text on black | 3.61:1 | AA large text | Lc -22.7 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B7C4C2
oklch(81% 0.015 185.9)
-
Step 400
400
#91A5A4
oklch(70.6% 0.022 193)
-
Step 500
500
#768F8D
oklch(63% 0.029 190.5)
-
Step 600
600
#5E7A77
oklch(55.7% 0.033 188.2)
-
Step 700
700 (this color)
#516A68
oklch(50.4% 0.03 190.2)
-
Step 800
800
#405452
oklch(42.9% 0.025 188.7)
-
Step 900
900
#364544
oklch(37.7% 0.019 191.3)
-
Step 950
950
#202828
oklch(26.9% 0.011 196.5)
#516A68 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) | #676768 | 0.032 |
| Deuteranopia (no green cones) | #626468 | 0.029 |
| Tritanopia (no blue cones) | #496B69 | 0.010 |
| Achromatopsia (no color) | #656565 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516A68
#516A68
oklch(50.4% 0.03 190.2)
- #745E60
#745E60
oklch(50.4% 0.029 12)
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 #516A68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.026
- Dim Gray #696969 ΔE 0.034
- Deep Turquoise #017374 ΔE 0.056
- Dark Aquamarine #017371 ΔE 0.056
- Dark Aqua #05696B ΔE 0.059
- Metallic Blue #4F738E ΔE 0.059
- Battleship Gray #6C757D ΔE 0.059
- Deep Aqua #08787F ΔE 0.061
Use #516A68 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.