#645EE3#645EE3

#645EE3 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 56.2% C 0.196 H 280.1°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#645EE3
RGB	rgb(100, 94, 227)
HSL	hsl(243, 70%, 63%)
HSV	hsv(243, 59%, 89%)
CMYK	cmyk(55.9%, 58.6%, 0%, 11%)
CIE-LAB	lab(47.31, 39.21, -67.14)
CIE-LCH	lch(47.31, 77.75, 300.29°)
OKLab	oklab(56.18% 0.0342 -0.1927)
OKLCH	oklch(56.18% 0.196 280.1)
XYZ	xyz(23.1190, 16.2593, 74.5783)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EE3 #DDE35E

analogous

#5E9AE3 #645EE3 #A75EE3

triadic

#645EE3 #E3645E #5EE364

tetradic

#645EE3 #E35E9A #DDE35E #5EE3A7

square

#645EE3 #E35E9A #DDE35E #5EE3A7

split-complementary

#645EE3 #E3A75E #9AE35E

monochromatic

#241DA9 #322ADA #645EE3 #9692EC #C8C6F5

Accessibility & contrast

On white

4.94

#645EE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#645EE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EE3

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EE3	#FFFFFF	#000000	##FFFFFF
##645EE3	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075E7

Deuteranopia (green-blind)

#006BE0

Tritanopia (blue-blind)

#207E97

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #645ee3;
/* rgb */ color: rgb(100, 94, 227);
/* oklch */ color: oklch(56.2% 0.196 280.1);

Tailwind

colors: {
  custom: {
    50: '#9b8ced',
    500: '#645ee3',
    950: '#000000',
  },
}

SCSS

$custom: #645ee3;
$custom-light: #9b8ced;
$custom-dark: #000000;

JSON

{
  "hex": "#645ee3",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 227
  },
  "hsl": {
    "h": 242.707,
    "s": 70.37,
    "l": 62.941
  },
  "oklch": {
    "l": 0.56182,
    "c": 0.19567,
    "h": 280.1
  },
  "luminance": 0.16261
}

Semantic roles & 50–950 ramp

primary

#645EE3

secondary

#E4E6B6

accent

#D213CA

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645EE3

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

Preview Lab → · Contrast checker → · Palette generator →