#645CF8#645CF8

#645CF8 is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.5% C 0.225 H 278.9°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#645CF8
RGB	rgb(100, 92, 248)
HSL	hsl(243, 92%, 67%)
HSV	hsv(243, 63%, 97%)
CMYK	cmyk(59.7%, 62.9%, 0%, 2.7%)
CIE-LAB	lab(48.43, 46.92, -77.11)
CIE-LCH	lch(48.43, 90.26, 301.32°)
OKLab	oklab(57.5% 0.0349 -0.222)
OKLCH	oklch(57.5% 0.225 278.9)
XYZ	xyz(26.0205, 17.1390, 90.7257)
Luminance	0.1714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CF8 #F0F85C

analogous

#5CA2F8 #645CF8 #B25CF8

triadic

#645CF8 #F8645C #5CF864

tetradic

#645CF8 #F85CA2 #F0F85C #5CF8B2

square

#645CF8 #F85CA2 #F0F85C #5CF8B2

split-complementary

#645CF8 #F8B25C #A2F85C

monochromatic

#1309D1 #2C21F5 #645CF8 #9C97FB #D4D1FD

Accessibility & contrast

On white

4.74

#645CF8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#645CF8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CF8

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CF8	#FFFFFF	#000000	##FFFFFF
##645CF8	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079FD

Deuteranopia (green-blind)

#006DF5

Tritanopia (blue-blind)

#0083A2

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #645cf8;
/* rgb */ color: rgb(100, 92, 248);
/* oklch */ color: oklch(57.5% 0.225 278.9);

Tailwind

colors: {
  custom: {
    50: '#9e8bfc',
    500: '#645cf8',
    950: '#000000',
  },
}

SCSS

$custom: #645cf8;
$custom-light: #9e8bfc;
$custom-dark: #000000;

JSON

{
  "hex": "#645cf8",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 248
  },
  "hsl": {
    "h": 243.077,
    "s": 91.765,
    "l": 66.667
  },
  "oklch": {
    "l": 0.57496,
    "c": 0.22469,
    "h": 278.9
  },
  "luminance": 0.17141
}

Semantic roles & 50–950 ramp

primary

#645CF8

secondary

#EEF1BF

accent

#E600DA

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645CF8

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

Preview Lab → · Contrast checker → · Palette generator →