#645BE7#645BE7

#645BE7 is a mid, highly saturated blue. Relative luminance 0.160; OKLCH L 56.0% C 0.205 H 280.4°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#645BE7
RGB	rgb(100, 91, 231)
HSL	hsl(244, 74%, 63%)
HSV	hsv(244, 61%, 91%)
CMYK	cmyk(56.7%, 60.6%, 0%, 9.4%)
CIE-LAB	lab(46.92, 42.23, -70.03)
CIE-LCH	lch(46.92, 81.78, 301.09°)
OKLab	oklab(55.99% 0.0368 -0.2012)
OKLCH	oklch(55.99% 0.205 280.4)
XYZ	xyz(23.4159, 15.9594, 77.4324)
Luminance	0.1596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BE7 #DEE75B

analogous

#5B98E7 #645BE7 #AA5BE7

triadic

#645BE7 #E7645B #5BE764

tetradic

#645BE7 #E75B98 #DEE75B #5BE7AA

square

#645BE7 #E75B98 #DEE75B #5BE7AA

split-complementary

#645BE7 #E7AA5B #98E75B

monochromatic

#2319AE #3226DF #645BE7 #9690EF #C9C6F7

Accessibility & contrast

On white

5.01

#645BE7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#645BE7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BE7

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BE7	#FFFFFF	#000000	##FFFFFF
##645BE7	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074EC

Deuteranopia (green-blind)

#006AE4

Tritanopia (blue-blind)

#187D98

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645be7;
/* rgb */ color: rgb(100, 91, 231);
/* oklch */ color: oklch(56.0% 0.205 280.4);

Tailwind

colors: {
  custom: {
    50: '#9b8af0',
    500: '#645be7',
    950: '#000000',
  },
}

SCSS

$custom: #645be7;
$custom-light: #9b8af0;
$custom-dark: #000000;

JSON

{
  "hex": "#645be7",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 231
  },
  "hsl": {
    "h": 243.857,
    "s": 74.468,
    "l": 63.137
  },
  "oklch": {
    "l": 0.55985,
    "c": 0.20454,
    "h": 280.4
  },
  "luminance": 0.15961
}

Semantic roles & 50–950 ramp

primary

#645BE7

secondary

#E5E8B6

accent

#D70FCA

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645BE7

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

Preview Lab → · Contrast checker → · Palette generator →