#645CE3#645CE3

#645CE3 is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.8% C 0.198 H 280.5°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#645CE3
RGB	rgb(100, 92, 227)
HSL	hsl(244, 71%, 63%)
HSV	hsv(244, 59%, 89%)
CMYK	cmyk(55.9%, 59.5%, 0%, 11%)
CIE-LAB	lab(46.85, 40.40, -67.88)
CIE-LCH	lch(46.85, 79.00, 300.76°)
OKLab	oklab(55.84% 0.0361 -0.1949)
OKLCH	oklch(55.84% 0.198 280.5)
XYZ	xyz(22.9435, 15.9082, 74.5197)
Luminance	0.1591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CE3 #DBE35C

analogous

#5C97E3 #645CE3 #A85CE3

triadic

#645CE3 #E3645C #5CE364

tetradic

#645CE3 #E35C97 #DBE35C #5CE3A8

square

#645CE3 #E35C97 #DBE35C #5CE3A8

split-complementary

#645CE3 #E3A85C #97E35C

monochromatic

#251DA8 #3228DA #645CE3 #9690EC #C7C4F5

Accessibility & contrast

On white

5.02

#645CE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#645CE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CE3

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CE3	#FFFFFF	#000000	##FFFFFF
##645CE3	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E7

Deuteranopia (green-blind)

#006AE0

Tritanopia (blue-blind)

#207C97

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645ce3;
/* rgb */ color: rgb(100, 92, 227);
/* oklch */ color: oklch(55.8% 0.198 280.5);

Tailwind

colors: {
  custom: {
    50: '#9b8aed',
    500: '#645ce3',
    950: '#000000',
  },
}

SCSS

$custom: #645ce3;
$custom-light: #9b8aed;
$custom-dark: #000000;

JSON

{
  "hex": "#645ce3",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 227
  },
  "hsl": {
    "h": 243.556,
    "s": 70.681,
    "l": 62.549
  },
  "oklch": {
    "l": 0.55844,
    "c": 0.19818,
    "h": 280.5
  },
  "luminance": 0.1591
}

Semantic roles & 50–950 ramp

primary

#645CE3

secondary

#E3E6B5

accent

#D313C7

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645CE3

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

Preview Lab → · Contrast checker → · Palette generator →