#645BE4#645BE4

#645BE4 is a mid, highly saturated blue. Relative luminance 0.158; OKLCH L 55.8% C 0.201 H 280.6°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#645BE4
RGB	rgb(100, 91, 228)
HSL	hsl(244, 72%, 63%)
HSV	hsv(244, 60%, 89%)
CMYK	cmyk(56.1%, 60.1%, 0%, 10.6%)
CIE-LAB	lab(46.70, 41.30, -68.70)
CIE-LCH	lch(46.70, 80.16, 301.01°)
OKLab	oklab(55.75% 0.037 -0.1973)
OKLCH	oklch(55.75% 0.201 280.6)
XYZ	xyz(22.9958, 15.7914, 75.2200)
Luminance	0.1579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BE4 #DBE45B

analogous

#5B96E4 #645BE4 #A95BE4

triadic

#645BE4 #E4645B #5BE464

tetradic

#645BE4 #E45B96 #DBE45B #5BE4A9

square

#645BE4 #E45B96 #DBE45B #5BE4A9

split-complementary

#645BE4 #E4A95B #96E45B

monochromatic

#251CA9 #3226DB #645BE4 #9690ED #C7C4F5

Accessibility & contrast

On white

5.05

#645BE4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#645BE4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BE4

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BE4	#FFFFFF	#000000	##FFFFFF
##645BE4	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E8

Deuteranopia (green-blind)

#006AE1

Tritanopia (blue-blind)

#1E7C97

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645be4;
/* rgb */ color: rgb(100, 91, 228);
/* oklch */ color: oklch(55.8% 0.201 280.6);

Tailwind

colors: {
  custom: {
    50: '#9b8aed',
    500: '#645be4',
    950: '#000000',
  },
}

SCSS

$custom: #645be4;
$custom-light: #9b8aed;
$custom-dark: #000000;

JSON

{
  "hex": "#645be4",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 228
  },
  "hsl": {
    "h": 243.942,
    "s": 71.728,
    "l": 62.549
  },
  "oklch": {
    "l": 0.55753,
    "c": 0.20072,
    "h": 280.6
  },
  "luminance": 0.15793
}

Semantic roles & 50–950 ramp

primary

#645BE4

secondary

#E3E6B4

accent

#D412C7

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645BE4

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

Preview Lab → · Contrast checker → · Palette generator →