#516C73
Closest named color: Slate (#516572). oklch(51.3% 0.033 215.4), rgb(81, 108, 115).
Aa
White text reads best on this color (5.61:1).
About this color
#516C73 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.033 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.021 away. White text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.74:1 |
| White text | 5.61:1 |
Values
| HEX | #516C73 |
| RGB | rgb(81, 108, 115) |
| HSL | hsl(192, 17%, 38%) |
| OKLCH | oklch(51.3% 0.033 215.4) |
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 #516C73 | 5.61:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #516C73 | 3.74:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #516C73 text on white | 5.61:1 | AA | Lc 78.0 | Fine for body text |
| #516C73 text on black | 3.74:1 | AA large text | Lc -23.7 | 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
#E6EBEC
oklch(93.7% 0.006 211)
-
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
#8FA5AB
oklch(70.7% 0.026 216)
-
Step 500
500
#738F96
oklch(63.1% 0.033 214.6)
-
Step 600
600
#5B7981
oklch(55.6% 0.037 215.9)
-
Step 700
700 (this color)
#516C73
oklch(51.3% 0.033 215.4)
-
Step 800
800
#3E5359
oklch(42.7% 0.028 217.2)
-
Step 900
900
#354549
oklch(37.8% 0.022 214.7)
-
Step 950
950
#1F282B
oklch(26.9% 0.014 220.1)
#516C73 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) | #676A73 | 0.031 |
| Deuteranopia (no green cones) | #616673 | 0.027 |
| Tritanopia (no blue cones) | #466F6E | 0.019 |
| Achromatopsia (no color) | #686868 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516C73
#516C73
oklch(51.3% 0.033 215.4)
- #79605A
#79605A
oklch(51.2% 0.034 33.8)
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 #516C73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.021
- Dim Gray #696969 ΔE 0.034
- Metallic Blue #4F738E ΔE 0.042
- Battleship Gray #6C757D ΔE 0.050
- Deep Turquoise #017374 ΔE 0.056
- Deep Aqua #08787F ΔE 0.056
- Dark Aquamarine #017371 ΔE 0.057
- Bluegreen #017A79 ΔE 0.061
Use #516C73 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.