#645DF3#645DF3

#645DF3 is a mid, highly saturated blue. Relative luminance 0.170; OKLCH L 57.3% C 0.217 H 279.1°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#645DF3
RGB	rgb(100, 93, 243)
HSL	hsl(243, 86%, 66%)
HSV	hsv(243, 62%, 95%)
CMYK	cmyk(58.8%, 61.7%, 0%, 4.7%)
CIE-LAB	lab(48.27, 44.79, -74.58)
CIE-LCH	lch(48.27, 87.00, 300.99°)
OKLab	oklab(57.26% 0.0344 -0.2145)
OKLCH	oklch(57.26% 0.217 279.1)
XYZ	xyz(25.3424, 17.0073, 86.7239)
Luminance	0.1701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DF3 #ECF35D

analogous

#5DA1F3 #645DF3 #AF5DF3

triadic

#645DF3 #F3645D #5DF364

tetradic

#645DF3 #F35DA1 #ECF35D #5DF3AF

square

#645DF3 #F35DA1 #ECF35D #5DF3AF

split-complementary

#645DF3 #F3AF5D #A1F35D

monochromatic

#170FC7 #2D24EF #645DF3 #9B96F7 #D1CFFB

Accessibility & contrast

On white

4.77

#645DF3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#645DF3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DF3

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DF3	#FFFFFF	#000000	##FFFFFF
##645DF3	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079F8

Deuteranopia (green-blind)

#006DF0

Tritanopia (blue-blind)

#00829F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #645df3;
/* rgb */ color: rgb(100, 93, 243);
/* oklch */ color: oklch(57.3% 0.217 279.1);

Tailwind

colors: {
  custom: {
    50: '#9d8bf8',
    500: '#645df3',
    950: '#000000',
  },
}

SCSS

$custom: #645df3;
$custom-light: #9d8bf8;
$custom-dark: #000000;

JSON

{
  "hex": "#645df3",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 243
  },
  "hsl": {
    "h": 242.8,
    "s": 86.207,
    "l": 65.882
  },
  "oklch": {
    "l": 0.57255,
    "c": 0.21729,
    "h": 279.1
  },
  "luminance": 0.17009
}

Semantic roles & 50–950 ramp

primary

#645DF3

secondary

#ECEFBD

accent

#E303D8

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645DF3

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

Preview Lab → · Contrast checker → · Palette generator →