#566497
Closest named color: Dusky Blue (#475F94). oklch(51.4% 0.083 271.5), rgb(86, 100, 151).
Aa
White text reads best on this color (5.72:1).
About this color
#566497 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.083 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.026 away. White text reads best on it, at 5.72:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #566497 |
| RGB | rgb(86, 100, 151) |
| HSL | hsl(227, 27%, 46%) |
| OKLCH | oklch(51.4% 0.083 271.5) |
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 #566497 | 5.72:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #566497 | 3.66:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #566497 text on white | 5.72:1 | AA | Lc 78.6 | Fine for body text |
| #566497 text on black | 3.66:1 | AA large text | Lc -23.2 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D4D9E8
oklch(88.6% 0.021 271.2)
-
Step 300
300
#B7C0DB
oklch(80.9% 0.039 270.9)
-
Step 400
400
#929FC9
oklch(70.7% 0.063 271.3)
-
Step 500
500
#7787BC
oklch(63.2% 0.082 271)
-
Step 600
600
#6070A8
oklch(55.6% 0.089 271.1)
-
Step 700
700 (this color)
#566497
oklch(51.4% 0.083 271.5)
-
Step 800
800
#414C75
oklch(42.6% 0.07 271.7)
-
Step 900
900
#37405E
oklch(37.7% 0.053 270.9)
-
Step 950
950
#202537
oklch(26.8% 0.034 272)
#566497 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) | #526999 | 0.014 |
| Deuteranopia (no green cones) | #4D6496 | 0.012 |
| Tritanopia (no blue cones) | #406E76 | 0.074 |
| Achromatopsia (no color) | #666666 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #566497
#566497
oklch(51.4% 0.083 271.5)
- #796529
#796529
oklch(51.4% 0.083 90.7)
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 #566497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.026
- Denim #3B638C ΔE 0.039
- French Blue #436BAD ΔE 0.040
- Muted Blue #3B719F ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.046
- Dull Blue #49759C ΔE 0.048
- Flat Blue #3C73A8 ΔE 0.049
- Metallic Blue #4F738E ΔE 0.050
Use #566497 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.