#645CD8#645CD8

#645CD8 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 55.0% C 0.184 H 281.4°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#645CD8
RGB	rgb(100, 92, 216)
HSL	hsl(244, 61%, 60%)
HSV	hsv(244, 57%, 85%)
CMYK	cmyk(53.7%, 57.4%, 0%, 15.3%)
CIE-LAB	lab(46.07, 36.98, -62.91)
CIE-LCH	lch(46.07, 72.97, 300.45°)
OKLab	oklab(55.02% 0.0363 -0.1802)
OKLCH	oklch(55.02% 0.184 281.4)
XYZ	xyz(21.4735, 15.3202, 66.7780)
Luminance	0.1532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CD8 #D0D85C

analogous

#5C92D8 #645CD8 #A25CD8

triadic

#645CD8 #D8645C #5CD864

tetradic

#645CD8 #D85C92 #D0D85C #5CD8A2

square

#645CD8 #D85C92 #D0D85C #5CD8A2

split-complementary

#645CD8 #D8A25C #92D85C

monochromatic

#2B2496 #3930C7 #645CD8 #938DE4 #C2BFF0

Accessibility & contrast

On white

5.17

#645CD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#645CD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CD8

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CD8	#FFFFFF	#000000	##FFFFFF
##645CD8	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0072DC

Deuteranopia (green-blind)

#0069D5

Tritanopia (blue-blind)

#307991

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645cd8;
/* rgb */ color: rgb(100, 92, 216);
/* oklch */ color: oklch(55.0% 0.184 281.4);

Tailwind

colors: {
  custom: {
    50: '#998ae5',
    500: '#645cd8',
    950: '#000000',
  },
}

SCSS

$custom: #645cd8;
$custom-light: #998ae5;
$custom-dark: #000000;

JSON

{
  "hex": "#645cd8",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 216
  },
  "hsl": {
    "h": 243.871,
    "s": 61.386,
    "l": 60.392
  },
  "oklch": {
    "l": 0.55018,
    "c": 0.18385,
    "h": 281.4
  },
  "luminance": 0.15321
}

Semantic roles & 50–950 ramp

primary

#645CD8

secondary

#DDE0B0

accent

#C91CBE

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645CD8

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

Preview Lab → · Contrast checker → · Palette generator →