#516D6F
Closest named color: Slate (#516572). oklch(51.4% 0.033 201.7), rgb(81, 109, 111).
Aa
White text reads best on this color (5.57:1).
About this color
#516D6F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.033 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.027 away. White text reads best on it, at 5.57:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #516D6F |
| RGB | rgb(81, 109, 111) |
| HSL | hsl(184, 16%, 38%) |
| OKLCH | oklch(51.4% 0.033 201.7) |
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 #516D6F | 5.57:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #516D6F | 3.76:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #516D6F text on white | 5.57:1 | AA | Lc 77.8 | Fine for body text |
| #516D6F text on black | 3.76:1 | AA large text | Lc -23.9 | 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
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D3DBDB
oklch(88.5% 0.009 197)
-
Step 300
300
#B5C4C5
oklch(80.9% 0.017 201.7)
-
Step 400
400
#8FA6A7
oklch(70.8% 0.026 199.8)
-
Step 500
500
#739092
oklch(63.2% 0.033 201.6)
-
Step 600
600
#5B7A7C
oklch(55.6% 0.036 201.1)
-
Step 700
700 (this color)
#516D6F
oklch(51.4% 0.033 201.7)
-
Step 800
800
#3E5455
oklch(42.8% 0.027 199.7)
-
Step 900
900
#354546
oklch(37.7% 0.021 201.1)
-
Step 950
950
#1F2829
oklch(26.9% 0.013 204.7)
#516D6F 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) | #696A6F | 0.034 |
| Deuteranopia (no green cones) | #63666F | 0.031 |
| Tritanopia (no blue cones) | #476F6E | 0.013 |
| Achromatopsia (no color) | #686868 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516D6F
#516D6F
oklch(51.4% 0.033 201.7)
- #79605F
#79605F
oklch(51.4% 0.033 20.9)
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 #516D6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.027
- Dim Gray #696969 ΔE 0.034
- Metallic Blue #4F738E ΔE 0.047
- Battleship Gray #6C757D ΔE 0.050
- Deep Turquoise #017374 ΔE 0.054
- Dark Aquamarine #017371 ΔE 0.055
- Deep Aqua #08787F ΔE 0.055
- Bluegreen #017A79 ΔE 0.058
Use #516D6F 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.