#645BF2#645BF2

#645BF2 is a mid, highly saturated blue. Relative luminance 0.166; OKLCH L 56.9% C 0.218 H 279.5°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#645BF2
RGB	rgb(100, 91, 242)
HSL	hsl(244, 85%, 65%)
HSV	hsv(244, 62%, 95%)
CMYK	cmyk(58.7%, 62.4%, 0%, 5.1%)
CIE-LAB	lab(47.75, 45.64, -74.86)
CIE-LCH	lch(47.75, 87.68, 301.37°)
OKLab	oklab(56.85% 0.0362 -0.2154)
OKLCH	oklch(56.85% 0.218 279.5)
XYZ	xyz(25.0185, 16.6005, 85.8730)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BF2 #E9F25B

analogous

#5B9EF2 #645BF2 #AF5BF2

triadic

#645BF2 #F2645B #5BF264

tetradic

#645BF2 #F25B9E #E9F25B #5BF2AF

square

#645BF2 #F25B9E #E9F25B #5BF2AF

split-complementary

#645BF2 #F2AF5B #9EF25B

monochromatic

#1A0FC3 #2E22EE #645BF2 #9A94F6 #CFCCFB

Accessibility & contrast

On white

4.86

#645BF2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#645BF2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BF2

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BF2	#FFFFFF	#000000	##FFFFFF
##645BF2	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077F7

Deuteranopia (green-blind)

#006BEF

Tritanopia (blue-blind)

#00819E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645bf2;
/* rgb */ color: rgb(100, 91, 242);
/* oklch */ color: oklch(56.9% 0.218 279.5);

Tailwind

colors: {
  custom: {
    50: '#9d8af7',
    500: '#645bf2',
    950: '#000000',
  },
}

SCSS

$custom: #645bf2;
$custom-light: #9d8af7;
$custom-dark: #000000;

JSON

{
  "hex": "#645bf2",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 242
  },
  "hsl": {
    "h": 243.576,
    "s": 85.311,
    "l": 65.294
  },
  "oklch": {
    "l": 0.56854,
    "c": 0.2184,
    "h": 279.5
  },
  "luminance": 0.16602
}

Semantic roles & 50–950 ramp

primary

#645BF2

secondary

#EBEEBB

accent

#E204D5

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645BF2

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

Preview Lab → · Contrast checker → · Palette generator →