#645DDF#645DDF

#645DDF is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.7% C 0.192 H 280.6°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#645DDF
RGB	rgb(100, 93, 223)
HSL	hsl(243, 67%, 62%)
HSV	hsv(243, 58%, 87%)
CMYK	cmyk(55.2%, 58.3%, 0%, 12.5%)
CIE-LAB	lab(46.80, 38.56, -65.71)
CIE-LCH	lch(46.80, 76.19, 300.41°)
OKLab	oklab(55.71% 0.0352 -0.1885)
OKLCH	oklch(55.71% 0.192 280.6)
XYZ	xyz(22.4850, 15.8643, 71.6750)
Luminance	0.1587 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DDF #D8DF5D

analogous

#5D97DF #645DDF #A55DDF

triadic

#645DDF #DF645D #5DDF64

tetradic

#645DDF #DF5D97 #D8DF5D #5DDFA5

square

#645DDF #DF5D97 #D8DF5D #5DDFA5

split-complementary

#645DDF #DFA55D #97DF5D

monochromatic

#2720A2 #332AD5 #645DDF #9590E9 #C6C3F3

Accessibility & contrast

On white

5.03

#645DDF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#645DDF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DDF

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DDF	#FFFFFF	#000000	##FFFFFF
##645DDF	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E3

Deuteranopia (green-blind)

#006ADC

Tritanopia (blue-blind)

#267C95

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645ddf;
/* rgb */ color: rgb(100, 93, 223);
/* oklch */ color: oklch(55.7% 0.192 280.6);

Tailwind

colors: {
  custom: {
    50: '#9a8bea',
    500: '#645ddf',
    950: '#000000',
  },
}

SCSS

$custom: #645ddf;
$custom-light: #9a8bea;
$custom-dark: #000000;

JSON

{
  "hex": "#645ddf",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 223
  },
  "hsl": {
    "h": 243.231,
    "s": 67.01,
    "l": 61.961
  },
  "oklch": {
    "l": 0.5571,
    "c": 0.19174,
    "h": 280.6
  },
  "luminance": 0.15866
}

Semantic roles & 50–950 ramp

primary

#645DDF

secondary

#E1E4B4

accent

#CF17C5

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645DDF

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

Preview Lab → · Contrast checker → · Palette generator →