#5564B9
Closest named color: French Blue (#436BAD). oklch(53.3% 0.133 273.5), rgb(85, 100, 185).
Aa
White text reads best on this color (5.37:1).
About this color
#5564B9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.133 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.035 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #5564B9 |
| RGB | rgb(85, 100, 185) |
| HSL | hsl(231, 42%, 53%) |
| OKLCH | oklch(53.3% 0.133 273.5) |
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 #5564B9 | 5.37:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #5564B9 | 3.90:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #5564B9 text on white | 5.37:1 | AA | Lc 76.6 | Fine for body text |
| #5564B9 text on black | 3.90:1 | AA large text | Lc -25.2 | 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 600.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BFE8
oklch(81% 0.059 273.2)
-
Step 400
400
#8D9CDD
oklch(70.6% 0.097 273.7)
-
Step 500
500
#7283D3
oklch(63.1% 0.122 273.3)
-
Step 600
600 (this color)
#5564B9
oklch(53.3% 0.133 273.5)
-
Step 700
700
#4B59A6
oklch(49.1% 0.124 273.3)
-
Step 800
800
#3E4987
oklch(42.8% 0.103 273.7)
-
Step 900
900
#343D6C
oklch(37.6% 0.081 273.7)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#5564B9 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) | #3E6FBC | 0.036 |
| Deuteranopia (no green cones) | #3266B7 | 0.038 |
| Tritanopia (no blue cones) | #247785 | 0.120 |
| Achromatopsia (no color) | #6A6A6A | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5564B9
#5564B9
oklch(53.3% 0.133 273.5)
- #826A00
#826A00
oklch(53.2% 0.109 93.2)
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 #5564B9, closest first.
No curated palette has a color within ΔE 0.04 of #5564B9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.035
- Iris #6258C4 ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.047
- Mid Blue #276AB3 ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.055
- Windows Blue #3778BF ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.059
Use #5564B9 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.