#645FF1#645FF1

#645FF1 is a mid, highly saturated blue. Relative luminance 0.172; OKLCH L 57.4% C 0.212 H 278.9°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#645FF1
RGB	rgb(100, 95, 241)
HSL	hsl(242, 84%, 66%)
HSV	hsv(242, 61%, 95%)
CMYK	cmyk(58.5%, 60.6%, 0%, 5.5%)
CIE-LAB	lab(48.56, 43.00, -72.98)
CIE-LCH	lch(48.56, 84.71, 300.51°)
OKLab	oklab(57.42% 0.0327 -0.2098)
OKLCH	oklch(57.42% 0.212 278.9)
XYZ	xyz(25.2199, 17.2428, 85.2012)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FF1 #ECF15F

analogous

#5FA3F1 #645FF1 #AD5FF1

triadic

#645FF1 #F1645F #5FF164

tetradic

#645FF1 #F15FA3 #ECF15F #5FF1AD

square

#645FF1 #F15FA3 #ECF15F #5FF1AD

split-complementary

#645FF1 #F1AD5F #A3F15F

monochromatic

#1711C4 #2D27EC #645FF1 #9B97F6 #D1D0FB

Accessibility & contrast

On white

4.72

#645FF1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#645FF1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FF1

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FF1	#FFFFFF	#000000	##FFFFFF
##645FF1	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079F6

Deuteranopia (green-blind)

#006DEE

Tritanopia (blue-blind)

#00839F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #645ff1;
/* rgb */ color: rgb(100, 95, 241);
/* oklch */ color: oklch(57.4% 0.212 278.9);

Tailwind

colors: {
  custom: {
    50: '#9d8df7',
    500: '#645ff1',
    950: '#000000',
  },
}

SCSS

$custom: #645ff1;
$custom-light: #9d8df7;
$custom-dark: #000000;

JSON

{
  "hex": "#645ff1",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 241
  },
  "hsl": {
    "h": 242.055,
    "s": 83.908,
    "l": 65.882
  },
  "oklch": {
    "l": 0.57424,
    "c": 0.21238,
    "h": 278.9
  },
  "luminance": 0.17245
}

Semantic roles & 50–950 ramp

primary

#645FF1

secondary

#ECEEBE

accent

#E005D9

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645FF1

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

Preview Lab → · Contrast checker → · Palette generator →