#516657
Closest named color: Slate (#516572). oklch(48.8% 0.035 153.9), rgb(81, 102, 87).
Aa
White text reads best on this color (6.19:1).
About this color
#516657 is a medium-dark, muted green. In OKLCH its lightness is 49%, its chroma 0.035 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate (#516572), ΔE 0.045 away. White text reads best on it, at 6.19:1.
| Hue family | Greens |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.035) |
| Temperature | in between |
| Nearest name | Slate (#516572) |
| Black text | 3.38:1 |
| White text | 6.19:1 |
Values
| HEX | #516657 |
| RGB | rgb(81, 102, 87) |
| HSL | hsl(137, 11%, 36%) |
| OKLCH | oklch(48.8% 0.035 153.9) |
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 #516657 | 6.19:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #516657 | 3.38:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #516657 text on white | 6.19:1 | AA | Lc 80.9 | Fine for body text |
| #516657 text on black | 3.38:1 | AA large text | Lc -20.9 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D5DBD6
oklch(88.5% 0.009 150.7)
-
Step 300
300
#B9C4BC
oklch(80.9% 0.016 154.4)
-
Step 400
400
#94A699
oklch(70.7% 0.028 154.2)
-
Step 500
500
#7A9080
oklch(63.1% 0.035 153.7)
-
Step 600
600
#637A69
oklch(55.6% 0.037 153.1)
-
Step 700
700 (this color)
#516657
oklch(48.8% 0.035 153.9)
-
Step 800
800
#435448
oklch(42.7% 0.029 154.3)
-
Step 900
900
#39453C
oklch(37.7% 0.022 152.9)
-
Step 950
950
#212923
oklch(27.1% 0.016 152.8)
#516657 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) | #666256 | 0.032 |
| Deuteranopia (no green cones) | #626058 | 0.030 |
| Tritanopia (no blue cones) | #4E6562 | 0.019 |
| Achromatopsia (no color) | #616161 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516657
#516657
oklch(48.8% 0.035 153.9)
- #6D5968
#6D5968
oklch(48.9% 0.035 335)
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 #516657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.045
- Dim Gray #696969 ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.054
- Dark Moss Green #606C38 ΔE 0.055
- Dark Aqua #05696B ΔE 0.061
- Dark Olive Green #556B2F ΔE 0.061
- Dark Aquamarine #017371 ΔE 0.064
- Camo Green #526525 ΔE 0.066
Use #516657 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.