#516E77
Closest named color: Slate (#516572). oklch(51.9% 0.037 218.9), rgb(81, 110, 119).
Aa
White text reads best on this color (5.45:1).
About this color
#516E77 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.037 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.026 away. White text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #516E77 |
| RGB | rgb(81, 110, 119) |
| HSL | hsl(194, 19%, 39%) |
| OKLCH | oklch(51.9% 0.037 218.9) |
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 #516E77 | 5.45:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #516E77 | 3.84:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #516E77 text on white | 5.45:1 | AA | Lc 77.2 | Fine for body text |
| #516E77 text on black | 3.84:1 | AA large text | Lc -24.5 | 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
#D2DBDD
oklch(88.5% 0.01 212.5)
-
Step 300
300
#B5C4C8
oklch(81% 0.017 215.5)
-
Step 400
400
#8EA5AD
oklch(70.7% 0.028 220.8)
-
Step 500
500
#718F98
oklch(63% 0.036 218)
-
Step 600
600
#597983
oklch(55.5% 0.04 219.1)
-
Step 700
700 (this color)
#516E77
oklch(51.9% 0.037 218.9)
-
Step 800
800
#3C535A
oklch(42.6% 0.03 218.5)
-
Step 900
900
#34454A
oklch(37.8% 0.023 217.7)
-
Step 950
950
#1E282B
oklch(26.9% 0.015 218)
#516E77 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) | #686C78 | 0.032 |
| Deuteranopia (no green cones) | #626777 | 0.030 |
| Tritanopia (no blue cones) | #447171 | 0.022 |
| Achromatopsia (no color) | #696969 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516E77
#516E77
oklch(51.9% 0.037 218.9)
- #7C6259
#7C6259
oklch(51.9% 0.037 40)
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 #516E77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.026
- Metallic Blue #4F738E ΔE 0.035
- Dim Gray #696969 ΔE 0.037
- Battleship Gray #6C757D ΔE 0.045
- Deep Aqua #08787F ΔE 0.053
- Deep Turquoise #017374 ΔE 0.056
- Dull Blue #49759C ΔE 0.056
- Dark Aquamarine #017371 ΔE 0.058
Use #516E77 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.