#516A71
Closest named color: Slate (#516572). oklch(50.7% 0.032 216.8), rgb(81, 106, 113).
Aa
White text reads best on this color (5.75:1).
About this color
#516A71 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.032 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.016 away. White text reads best on it, at 5.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.64:1 |
| White text | 5.75:1 |
Values
| HEX | #516A71 |
| RGB | rgb(81, 106, 113) |
| HSL | hsl(193, 16%, 38%) |
| OKLCH | oklch(50.7% 0.032 216.8) |
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 #516A71 | 5.75:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #516A71 | 3.64:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #516A71 text on white | 5.75:1 | AA | Lc 78.8 | Fine for body text |
| #516A71 text on black | 3.64:1 | 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
#E7EBEC
oklch(93.7% 0.005 214.3)
-
Step 200
200
#D3DBDD
oklch(88.6% 0.009 214.3)
-
Step 300
300
#B6C3C7
oklch(80.8% 0.015 218.1)
-
Step 400
400
#90A5AB
oklch(70.8% 0.025 216.8)
-
Step 500
500
#758F96
oklch(63.2% 0.031 215.9)
-
Step 600
600
#5D7980
oklch(55.7% 0.034 214.7)
-
Step 700
700 (this color)
#516A71
oklch(50.7% 0.032 216.8)
-
Step 800
800
#3F5358
oklch(42.7% 0.026 214.7)
-
Step 900
900
#364449
oklch(37.6% 0.02 221.6)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#516A71 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) | #656871 | 0.028 |
| Deuteranopia (no green cones) | #606471 | 0.026 |
| Tritanopia (no blue cones) | #476D6C | 0.019 |
| Achromatopsia (no color) | #666666 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516A71
#516A71
oklch(50.7% 0.032 216.8)
- #765F59
#765F59
oklch(50.7% 0.032 35)
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 #516A71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.016
- Dim Gray #696969 ΔE 0.034
- Metallic Blue #4F738E ΔE 0.046
- Battleship Gray #6C757D ΔE 0.054
- Deep Turquoise #017374 ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.059
- Deep Aqua #08787F ΔE 0.059
- YInMn Blue #415A77 ΔE 0.059
Use #516A71 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.