#645DF4#645DF4

#645DF4 is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.3% C 0.219 H 279.0°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#645DF4
RGB	rgb(100, 93, 244)
HSL	hsl(243, 87%, 66%)
HSV	hsv(243, 62%, 96%)
CMYK	cmyk(59%, 61.9%, 0%, 4.3%)
CIE-LAB	lab(48.35, 45.10, -75.02)
CIE-LCH	lch(48.35, 87.53, 301.02°)
OKLab	oklab(57.34% 0.0343 -0.2158)
OKLCH	oklch(57.34% 0.219 279)
XYZ	xyz(25.4938, 17.0678, 87.5214)
Luminance	0.1707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DF4 #EDF45D

analogous

#5DA1F4 #645DF4 #AF5DF4

triadic

#645DF4 #F4645D #5DF464

tetradic

#645DF4 #F45DA1 #EDF45D #5DF4AF

square

#645DF4 #F45DA1 #EDF45D #5DF4AF

split-complementary

#645DF4 #F4AF5D #A1F45D

monochromatic

#160EC9 #2D24F0 #645DF4 #9B96F8 #D2D0FC

Accessibility & contrast

On white

4.76

#645DF4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#645DF4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DF4

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DF4	#FFFFFF	#000000	##FFFFFF
##645DF4	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079F9

Deuteranopia (green-blind)

#006DF1

Tritanopia (blue-blind)

#0083A0

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #645df4;
/* rgb */ color: rgb(100, 93, 244);
/* oklch */ color: oklch(57.3% 0.219 279.0);

Tailwind

colors: {
  custom: {
    50: '#9d8bf9',
    500: '#645df4',
    950: '#000000',
  },
}

SCSS

$custom: #645df4;
$custom-light: #9d8bf9;
$custom-dark: #000000;

JSON

{
  "hex": "#645df4",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 244
  },
  "hsl": {
    "h": 242.781,
    "s": 87.283,
    "l": 66.078
  },
  "oklch": {
    "l": 0.57335,
    "c": 0.21854,
    "h": 279
  },
  "luminance": 0.1707
}

Semantic roles & 50–950 ramp

primary

#645DF4

secondary

#EDEFBE

accent

#E402D9

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645DF4

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

Preview Lab → · Contrast checker → · Palette generator →