#6566E4#6566E4

#6566E4 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.7% C 0.187 H 278.5°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#6566E4
RGB	rgb(101, 102, 228)
HSL	hsl(240, 70%, 65%)
HSV	hsv(240, 56%, 89%)
CMYK	cmyk(55.7%, 55.3%, 0%, 10.6%)
CIE-LAB	lab(49.34, 34.92, -64.42)
CIE-LCH	lch(49.34, 73.27, 298.46°)
OKLab	oklab(57.72% 0.0275 -0.1846)
OKLCH	oklch(57.72% 0.187 278.5)
XYZ	xyz(24.1174, 17.8693, 75.5620)
Luminance	0.1787 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6566E4 #E4E365

analogous

#65A5E4 #6566E4 #A465E4

triadic

#6566E4 #E46566 #66E465

tetradic

#6566E4 #E465A5 #E4E365 #65E4A4

square

#6566E4 #E465A5 #E4E365 #65E4A4

split-complementary

#6566E4 #E4A465 #A5E465

monochromatic

#1F20B0 #3132DB #6566E4 #999AED #CDCDF6

Accessibility & contrast

On white

4.59

#6566E4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#6566E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6566E4

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6566E4	#FFFFFF	#000000	##FFFFFF
##6566E4	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#027BE8

Deuteranopia (green-blind)

#0070E1

Tritanopia (blue-blind)

#20839B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #6566e4;
/* rgb */ color: rgb(101, 102, 228);
/* oklch */ color: oklch(57.7% 0.187 278.5);

Tailwind

colors: {
  custom: {
    50: '#9b91ed',
    500: '#6566e4',
    950: '#000000',
  },
}

SCSS

$custom: #6566e4;
$custom-light: #9b91ed;
$custom-dark: #000000;

JSON

{
  "hex": "#6566e4",
  "rgb": {
    "r": 101,
    "g": 102,
    "b": 228
  },
  "hsl": {
    "h": 239.528,
    "s": 70.166,
    "l": 64.51
  },
  "oklch": {
    "l": 0.57722,
    "c": 0.18662,
    "h": 278.5
  },
  "luminance": 0.17871
}

Semantic roles & 50–950 ramp

primary

#6566E4

secondary

#E8E8BC

accent

#D113D2

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0D16

muted

#7F7D84

Preview Lab

Preview with #6566E4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →