#566587
Closest named color: Denim (#3B638C). oklch(50.8% 0.057 266), rgb(86, 101, 135).
Aa
White text reads best on this color (5.82:1).
About this color
#566587 is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.057 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.035 away. White text reads best on it, at 5.82:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.60:1 |
| White text | 5.82:1 |
Values
| HEX | #566587 |
| RGB | rgb(86, 101, 135) |
| HSL | hsl(222, 22%, 43%) |
| OKLCH | oklch(50.8% 0.057 266) |
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 #566587 | 5.82:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #566587 | 3.60:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #566587 text on white | 5.82:1 | AA | Lc 79.1 | Fine for body text |
| #566587 text on black | 3.60:1 | AA large text | Lc -22.7 | 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
#D4D9E4
oklch(88.5% 0.016 266.3)
-
Step 300
300
#B8C1D3
oklch(81% 0.027 264.4)
-
Step 400
400
#94A1BD
oklch(70.8% 0.044 265.6)
-
Step 500
500
#7989AD
oklch(63.1% 0.058 266.1)
-
Step 600
600
#627398
oklch(55.6% 0.061 265.3)
-
Step 700
700 (this color)
#566587
oklch(50.8% 0.057 266)
-
Step 800
800
#434F6A
oklch(42.9% 0.048 265.9)
-
Step 900
900
#384156
oklch(37.6% 0.038 266.6)
-
Step 950
950
#212632
oklch(26.9% 0.024 267.1)
#566587 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) | #5A6789 | 0.009 |
| Deuteranopia (no green cones) | #556386 | 0.006 |
| Tritanopia (no blue cones) | #476C71 | 0.051 |
| Achromatopsia (no color) | #656565 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #566587
#566587
oklch(50.8% 0.057 266)
- #74633E
#74633E
oklch(50.7% 0.057 85.8)
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 #566587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.035
- Slate #516572 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.037
- Metallic Blue #4F738E ΔE 0.040
- Dusty Grape #545775 ΔE 0.045
- Muted Blue #3B719F ΔE 0.050
- Dull Blue #49759C ΔE 0.050
- YInMn Blue #415A77 ΔE 0.050
Use #566587 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.