#645BEE#645BEE

#645BEE is a mid, highly saturated blue. Relative luminance 0.164; OKLCH L 56.5% C 0.213 H 279.8°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#645BEE
RGB	rgb(100, 91, 238)
HSL	hsl(244, 81%, 65%)
HSV	hsv(244, 62%, 93%)
CMYK	cmyk(58%, 61.8%, 0%, 6.7%)
CIE-LAB	lab(47.45, 44.40, -73.12)
CIE-LCH	lch(47.45, 85.55, 301.27°)
OKLab	oklab(56.54% 0.0364 -0.2103)
OKLCH	oklch(56.54% 0.213 279.8)
XYZ	xyz(24.4244, 16.3628, 82.7436)
Luminance	0.1636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BEE #E5EE5B

analogous

#5B9CEE #645BEE #AD5BEE

triadic

#645BEE #EE645B #5BEE64

tetradic

#645BEE #EE5B9C #E5EE5B #5BEEAD

square

#645BEE #EE5B9C #E5EE5B #5BEEAD

split-complementary

#645BEE #EEAD5B #9CEE5B

monochromatic

#1E13BB #3024E8 #645BEE #9892F4 #CDCAF9

Accessibility & contrast

On white

4.91

#645BEE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#645BEE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BEE

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BEE	#FFFFFF	#000000	##FFFFFF
##645BEE	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076F3

Deuteranopia (green-blind)

#006BEB

Tritanopia (blue-blind)

#007F9C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645bee;
/* rgb */ color: rgb(100, 91, 238);
/* oklch */ color: oklch(56.5% 0.213 279.8);

Tailwind

colors: {
  custom: {
    50: '#9d8af5',
    500: '#645bee',
    950: '#000000',
  },
}

SCSS

$custom: #645bee;
$custom-light: #9d8af5;
$custom-dark: #000000;

JSON

{
  "hex": "#645bee",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 238
  },
  "hsl": {
    "h": 243.673,
    "s": 81.215,
    "l": 64.51
  },
  "oklch": {
    "l": 0.56535,
    "c": 0.2134,
    "h": 279.8
  },
  "luminance": 0.16365
}

Semantic roles & 50–950 ramp

primary

#645BEE

secondary

#E9ECB9

accent

#DE08D0

background

#FAF8FF

surface

#F4F0FE

border

#CECBD6

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645BEE

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

Preview Lab → · Contrast checker → · Palette generator →