#645BF8#645BF8

#645BF8 is a mid, highly saturated blue. Relative luminance 0.170; OKLCH L 57.3% C 0.226 H 279.1°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#645BF8
RGB	rgb(100, 91, 248)
HSL	hsl(243, 92%, 66%)
HSV	hsv(243, 63%, 97%)
CMYK	cmyk(59.7%, 63.3%, 0%, 2.7%)
CIE-LAB	lab(48.22, 47.50, -77.46)
CIE-LCH	lch(48.22, 90.86, 301.52°)
OKLab	oklab(57.34% 0.0357 -0.223)
OKLCH	oklch(57.34% 0.226 279.1)
XYZ	xyz(25.9345, 16.9669, 90.6970)
Luminance	0.1697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BF8 #EFF85B

analogous

#5BA1F8 #645BF8 #B25BF8

triadic

#645BF8 #F8645B #5BF864

tetradic

#645BF8 #F85BA1 #EFF85B #5BF8B2

square

#645BF8 #F85BA1 #EFF85B #5BF8B2

split-complementary

#645BF8 #F8B25B #A1F85B

monochromatic

#1409D0 #2D20F5 #645BF8 #9B96FB #D3D0FD

Accessibility & contrast

On white

4.78

#645BF8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#645BF8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BF8

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BF8	#FFFFFF	#000000	##FFFFFF
##645BF8	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)

#0079FD

Deuteranopia (green-blind)

#006CF5

Tritanopia (blue-blind)

#0083A1

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #645bf8;
/* rgb */ color: rgb(100, 91, 248);
/* oklch */ color: oklch(57.3% 0.226 279.1);

Tailwind

colors: {
  custom: {
    50: '#9e8afc',
    500: '#645bf8',
    950: '#000000',
  },
}

SCSS

$custom: #645bf8;
$custom-light: #9e8afc;
$custom-dark: #000000;

JSON

{
  "hex": "#645bf8",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 248
  },
  "hsl": {
    "h": 243.439,
    "s": 91.813,
    "l": 66.471
  },
  "oklch": {
    "l": 0.57338,
    "c": 0.22584,
    "h": 279.1
  },
  "luminance": 0.16969
}

Semantic roles & 50–950 ramp

primary

#645BF8

secondary

#EEF1BE

accent

#E600D8

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645BF8

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

Preview Lab → · Contrast checker → · Palette generator →