#566685
Closest named color: Slate (#516572). oklch(50.9% 0.053 263.4), rgb(86, 102, 133).
Aa
White text reads best on this color (5.77:1).
About this color
#566685 is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.053 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.032 away. White text reads best on it, at 5.77:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #566685 |
| RGB | rgb(86, 102, 133) |
| HSL | hsl(220, 21%, 43%) |
| OKLCH | oklch(50.9% 0.053 263.4) |
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 #566685 | 5.77:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #566685 | 3.63:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #566685 text on white | 5.77:1 | AA | Lc 78.9 | Fine for body text |
| #566685 text on black | 3.63:1 | AA large text | Lc -22.9 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D2
oklch(80.9% 0.026 263.3)
-
Step 400
400
#93A1BB
oklch(70.7% 0.041 262.8)
-
Step 500
500
#798AAA
oklch(63.2% 0.052 263)
-
Step 600
600
#627395
oklch(55.5% 0.057 263.9)
-
Step 700
700 (this color)
#566685
oklch(50.9% 0.053 263.4)
-
Step 800
800
#424F68
oklch(42.7% 0.045 263.2)
-
Step 900
900
#384254
oklch(37.8% 0.034 262.1)
-
Step 950
950
#212731
oklch(27.1% 0.021 260.6)
#566685 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) | #5C6886 | 0.011 |
| Deuteranopia (no green cones) | #576484 | 0.006 |
| Tritanopia (no blue cones) | #486C71 | 0.046 |
| Achromatopsia (no color) | #666666 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #566685
#566685
oklch(50.9% 0.053 263.4)
- #756342
#756342
oklch(50.9% 0.053 82.1)
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 #566685, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.037
- Denim #3B638C ΔE 0.037
- Dusky Blue #475F94 ΔE 0.041
- Dusty Grape #545775 ΔE 0.046
- Dull Blue #49759C ΔE 0.049
- Muted Blue #3B719F ΔE 0.050
- YInMn Blue #415A77 ΔE 0.051
Use #566685 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.