#645CDF#645CDF

#645CDF is a mid, vivid blue. Relative luminance 0.157; OKLCH L 55.5% C 0.193 H 280.8°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#645CDF
RGB	rgb(100, 92, 223)
HSL	hsl(244, 67%, 62%)
HSV	hsv(244, 59%, 87%)
CMYK	cmyk(55.2%, 58.7%, 0%, 12.5%)
CIE-LAB	lab(46.56, 39.16, -66.09)
CIE-LCH	lch(46.56, 76.82, 300.65°)
OKLab	oklab(55.54% 0.0362 -0.1896)
OKLCH	oklch(55.54% 0.193 280.8)
XYZ	xyz(22.3978, 15.6899, 71.6459)
Luminance	0.1569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CDF #D7DF5C

analogous

#5C96DF #645CDF #A65CDF

triadic

#645CDF #DF645C #5CDF64

tetradic

#645CDF #DF5C96 #D7DF5C #5CDFA6

square

#645CDF #DF5C96 #D7DF5C #5CDFA6

split-complementary

#645CDF #DFA65C #96DF5C

monochromatic

#2820A1 #342AD4 #645CDF #958FE9 #C5C2F3

Accessibility & contrast

On white

5.07

#645CDF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#645CDF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CDF

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CDF	#FFFFFF	#000000	##FFFFFF
##645CDF	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E3

Deuteranopia (green-blind)

#0069DC

Tritanopia (blue-blind)

#277B95

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645cdf;
/* rgb */ color: rgb(100, 92, 223);
/* oklch */ color: oklch(55.5% 0.193 280.8);

Tailwind

colors: {
  custom: {
    50: '#9a8aea',
    500: '#645cdf',
    950: '#000000',
  },
}

SCSS

$custom: #645cdf;
$custom-light: #9a8aea;
$custom-dark: #000000;

JSON

{
  "hex": "#645cdf",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 223
  },
  "hsl": {
    "h": 243.664,
    "s": 67.179,
    "l": 61.765
  },
  "oklch": {
    "l": 0.5554,
    "c": 0.19301,
    "h": 280.8
  },
  "luminance": 0.15691
}

Semantic roles & 50–950 ramp

primary

#645CDF

secondary

#E1E4B3

accent

#CF16C4

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645CDF

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

Preview Lab → · Contrast checker → · Palette generator →