#566780
Closest named color: Slate (#516572). oklch(50.9% 0.045 257.9), rgb(86, 103, 128).
Aa
White text reads best on this color (5.75:1).
About this color
#566780 is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.045 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.024 away. White text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.64:1 |
| White text | 5.75:1 |
Values
| HEX | #566780 |
| RGB | rgb(86, 103, 128) |
| HSL | hsl(216, 20%, 42%) |
| OKLCH | oklch(50.9% 0.045 257.9) |
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 #566780 | 5.75:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #566780 | 3.64:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #566780 text on white | 5.75:1 | AA | Lc 78.8 | Fine for body text |
| #566780 text on black | 3.64:1 | AA large text | Lc -23.0 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4D9E1
oklch(88.4% 0.012 259.8)
-
Step 300
300
#B8C1CF
oklch(80.8% 0.022 259.2)
-
Step 400
400
#93A2B7
oklch(70.7% 0.035 256.8)
-
Step 500
500
#798BA5
oklch(63.2% 0.045 257.5)
-
Step 600
600
#627490
oklch(55.5% 0.049 259.1)
-
Step 700
700 (this color)
#566780
oklch(50.9% 0.045 257.9)
-
Step 800
800
#425064
oklch(42.7% 0.038 257.3)
-
Step 900
900
#384251
oklch(37.6% 0.029 258.4)
-
Step 950
950
#212730
oklch(27.1% 0.019 258.4)
#566780 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) | #5E6881 | 0.012 |
| Deuteranopia (no green cones) | #5A647F | 0.010 |
| Tritanopia (no blue cones) | #4A6C6F | 0.039 |
| Achromatopsia (no color) | #666666 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #566780
#566780
oklch(50.9% 0.045 257.9)
- #746349
#746349
oklch(50.9% 0.044 78.1)
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 #566780, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.024
- Metallic Blue #4F738E ΔE 0.036
- Denim #3B638C ΔE 0.042
- Dim Gray #696969 ΔE 0.046
- Dusty Grape #545775 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.051
- Dull Blue #49759C ΔE 0.052
Use #566780 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.