#5564CE
Closest named color: Dark Periwinkle (#665FD1). oklch(54.7% 0.163 273.7), rgb(85, 100, 206).
Aa
White text reads best on this color (5.12:1).
About this color
#5564CE is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.163 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.026 away. White text reads best on it, at 5.12:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.10:1 |
| White text | 5.12:1 |
Values
| HEX | #5564CE |
| RGB | rgb(85, 100, 206) |
| HSL | hsl(233, 55%, 57%) |
| OKLCH | oklch(54.7% 0.163 273.7) |
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 #5564CE | 5.12:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #5564CE | 4.10:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #5564CE text on white | 5.12:1 | AA | Lc 75.0 | Fine for body text |
| #5564CE text on black | 4.10:1 | AA large text | Lc -26.7 | 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 600.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#899BEA
oklch(70.8% 0.118 273.3)
-
Step 500
500
#6E80E3
oklch(63.2% 0.149 273.6)
-
Step 600
600 (this color)
#5564CE
oklch(54.7% 0.163 273.7)
-
Step 700
700
#4855B5
oklch(49.2% 0.151 273.7)
-
Step 800
800
#3B4692
oklch(42.7% 0.125 273.7)
-
Step 900
900
#323B75
oklch(37.6% 0.099 274)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#5564CE 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) | #2873D2 | 0.051 |
| Deuteranopia (no green cones) | #0869CC | 0.057 |
| Tritanopia (no blue cones) | #007C8F | 0.143 |
| Achromatopsia (no color) | #6E6E6E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5564CE
#5564CE
oklch(54.7% 0.163 273.7)
- #876E00
#876E00
oklch(54.7% 0.112 93.1)
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 #5564CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.026
- Iris #6258C4 ΔE 0.034
- Slate Blue #6A5ACD ΔE 0.036
- Royal Blue #4169E1 ΔE 0.036
- Light Indigo #6D5ACF ΔE 0.039
- Warm Blue #4B57DB ΔE 0.042
- Neon Blue #4361EE ΔE 0.054
- French Blue #436BAD ΔE 0.062
Use #5564CE 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.