#645CEB#645CEB

#645CEB is a mid, highly saturated blue. Relative luminance 0.164; OKLCH L 56.5% C 0.208 H 279.9°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#645CEB
RGB	rgb(100, 92, 235)
HSL	hsl(243, 78%, 64%)
HSV	hsv(243, 61%, 92%)
CMYK	cmyk(57.4%, 60.9%, 0%, 7.8%)
CIE-LAB	lab(47.44, 42.89, -71.44)
CIE-LCH	lch(47.44, 83.32, 300.98°)
OKLab	oklab(56.46% 0.0357 -0.2053)
OKLCH	oklch(56.46% 0.208 279.9)
XYZ	xyz(24.0733, 16.3601, 80.4704)
Luminance	0.1636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CEB #E3EB5C

analogous

#5C9CEB #645CEB #AC5CEB

triadic

#645CEB #EB645C #5CEB64

tetradic

#645CEB #EB5C9C #E3EB5C #5CEBAC

square

#645CEB #EB5C9C #E3EB5C #5CEBAC

split-complementary

#645CEB #EBAC5C #9CEB5C

monochromatic

#1F16B6 #3025E4 #645CEB #9893F2 #CCC9F8

Accessibility & contrast

On white

4.92

#645CEB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#645CEB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CEB

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CEB	#FFFFFF	#000000	##FFFFFF
##645CEB	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076F0

Deuteranopia (green-blind)

#006BE8

Tritanopia (blue-blind)

#0B7F9B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645ceb;
/* rgb */ color: rgb(100, 92, 235);
/* oklch */ color: oklch(56.5% 0.208 279.9);

Tailwind

colors: {
  custom: {
    50: '#9c8bf2',
    500: '#645ceb',
    950: '#000000',
  },
}

SCSS

$custom: #645ceb;
$custom-light: #9c8bf2;
$custom-dark: #000000;

JSON

{
  "hex": "#645ceb",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 235
  },
  "hsl": {
    "h": 243.357,
    "s": 78.142,
    "l": 64.118
  },
  "oklch": {
    "l": 0.56462,
    "c": 0.2084,
    "h": 279.9
  },
  "luminance": 0.16362
}

Semantic roles & 50–950 ramp

primary

#645CEB

secondary

#E8EAB8

accent

#DA0BCF

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645CEB

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

Preview Lab → · Contrast checker → · Palette generator →