#516B68
Closest named color: Slate (#516572). oklch(50.6% 0.031 187.5), rgb(81, 107, 104).
Aa
White text reads best on this color (5.74:1).
About this color
#516B68 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.031 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.028 away. White text reads best on it, at 5.74:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #516B68 |
| RGB | rgb(81, 107, 104) |
| HSL | hsl(173, 14%, 37%) |
| OKLCH | oklch(50.6% 0.031 187.5) |
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 #516B68 | 5.74:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #516B68 | 3.65:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #516B68 text on white | 5.74:1 | AA | Lc 78.7 | Fine for body text |
| #516B68 text on black | 3.65:1 | AA large text | Lc -23.0 | 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
#B6C4C2
oklch(80.9% 0.016 186.6)
-
Step 400
400
#91A6A3
oklch(70.8% 0.024 186.2)
-
Step 500
500
#75908D
oklch(63.2% 0.031 188.1)
-
Step 600
600
#5D7A77
oklch(55.6% 0.034 188.4)
-
Step 700
700 (this color)
#516B68
oklch(50.6% 0.031 187.5)
-
Step 800
800
#3F5451
oklch(42.7% 0.026 185.5)
-
Step 900
900
#364543
oklch(37.7% 0.02 186.4)
-
Step 950
950
#202927
oklch(27.2% 0.013 180.3)
#516B68 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) | #686868 | 0.033 |
| Deuteranopia (no green cones) | #636468 | 0.031 |
| Tritanopia (no blue cones) | #496C6A | 0.010 |
| Achromatopsia (no color) | #666666 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516B68
#516B68
oklch(50.6% 0.031 187.5)
- #755E62
#755E62
oklch(50.6% 0.03 6.5)
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 #516B68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.028
- Dim Gray #696969 ΔE 0.034
- Deep Turquoise #017374 ΔE 0.055
- Dark Aquamarine #017371 ΔE 0.055
- Battleship Gray #6C757D ΔE 0.058
- Metallic Blue #4F738E ΔE 0.058
- Dark Aqua #05696B ΔE 0.059
- Deep Aqua #08787F ΔE 0.060
Use #516B68 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.