#516677
Closest named color: Slate (#516572). oklch(50% 0.037 243), rgb(81, 102, 119).
Aa
White text reads best on this color (5.97:1).
About this color
#516677 is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.037 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.008 away. White text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.51:1 |
| White text | 5.97:1 |
Values
| HEX | #516677 |
| RGB | rgb(81, 102, 119) |
| HSL | hsl(207, 19%, 39%) |
| OKLCH | oklch(50% 0.037 243) |
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 #516677 | 5.97:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #516677 | 3.51:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #516677 text on white | 5.97:1 | AA | Lc 79.8 | Fine for body text |
| #516677 text on black | 3.51:1 | AA large text | Lc -22.0 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B7C2CC
oklch(80.9% 0.019 245.4)
-
Step 400
400
#92A3B1
oklch(70.7% 0.028 242.9)
-
Step 500
500
#778D9E
oklch(63.2% 0.036 241.4)
-
Step 600
600
#5F7689
oklch(55.5% 0.04 243.5)
-
Step 700
700 (this color)
#516677
oklch(50% 0.037 243)
-
Step 800
800
#41515F
oklch(42.7% 0.031 245)
-
Step 900
900
#37434E
oklch(37.7% 0.025 246.2)
-
Step 950
950
#20272D
oklch(26.8% 0.015 244.2)
#516677 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) | #5F6678 | 0.020 |
| Deuteranopia (no green cones) | #5A6277 | 0.016 |
| Tritanopia (no blue cones) | #456A6B | 0.031 |
| Achromatopsia (no color) | #636363 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516677
#516677
oklch(50% 0.037 243)
- #735F4D
#735F4D
oklch(50% 0.038 63.8)
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 #516677, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.008
- Dim Gray #696969 ΔE 0.043
- Dusty Grape #545775 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
- Denim #3B638C ΔE 0.045
- Metallic Blue #4F738E ΔE 0.045
- Dusky Blue #475F94 ΔE 0.058
- Battleship Gray #6C757D ΔE 0.061
Use #516677 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.