#645CF5#645CF5

#645CF5 is a mid, highly saturated blue. Relative luminance 0.170; OKLCH L 57.3% C 0.221 H 279.1°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#645CF5
RGB	rgb(100, 92, 245)
HSL	hsl(243, 88%, 66%)
HSV	hsv(243, 62%, 96%)
CMYK	cmyk(59.2%, 62.4%, 0%, 3.9%)
CIE-LAB	lab(48.20, 45.99, -75.81)
CIE-LCH	lch(48.20, 88.67, 301.25°)
OKLab	oklab(57.25% 0.0351 -0.2182)
OKLCH	oklch(57.25% 0.221 279.1)
XYZ	xyz(25.5589, 16.9543, 88.2942)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CF5 #EDF55C

analogous

#5CA0F5 #645CF5 #B05CF5

triadic

#645CF5 #F5645C #5CF564

tetradic

#645CF5 #F55CA0 #EDF55C #5CF5B0

square

#645CF5 #F55CA0 #EDF55C #5CF5B0

split-complementary

#645CF5 #F5B05C #A0F55C

monochromatic

#160CCA #2D22F1 #645CF5 #9B96F9 #D2CFFC

Accessibility & contrast

On white

4.78

#645CF5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#645CF5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CF5

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CF5	#FFFFFF	#000000	##FFFFFF
##645CF5	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078FA

Deuteranopia (green-blind)

#006CF2

Tritanopia (blue-blind)

#0082A0

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #645cf5;
/* rgb */ color: rgb(100, 92, 245);
/* oklch */ color: oklch(57.3% 0.221 279.1);

Tailwind

colors: {
  custom: {
    50: '#9e8bfa',
    500: '#645cf5',
    950: '#000000',
  },
}

SCSS

$custom: #645cf5;
$custom-light: #9e8bfa;
$custom-dark: #000000;

JSON

{
  "hex": "#645cf5",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 245
  },
  "hsl": {
    "h": 243.137,
    "s": 88.439,
    "l": 66.078
  },
  "oklch": {
    "l": 0.57254,
    "c": 0.22096,
    "h": 279.1
  },
  "luminance": 0.16956
}

Semantic roles & 50–950 ramp

primary

#645CF5

secondary

#EDF0BD

accent

#E500D9

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645CF5

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

Preview Lab → · Contrast checker → · Palette generator →