#645CDE#645CDE

#645CDE is a mid, vivid blue. Relative luminance 0.156; OKLCH L 55.5% C 0.192 H 280.9°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#645CDE
RGB	rgb(100, 92, 222)
HSL	hsl(244, 66%, 62%)
HSV	hsv(244, 59%, 87%)
CMYK	cmyk(55%, 58.6%, 0%, 12.9%)
CIE-LAB	lab(46.49, 38.85, -65.63)
CIE-LCH	lch(46.49, 76.27, 300.62°)
OKLab	oklab(55.47% 0.0362 -0.1883)
OKLCH	oklch(55.47% 0.192 280.9)
XYZ	xyz(22.2634, 15.6361, 70.9380)
Luminance	0.1564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CDE #D6DE5C

analogous

#5C95DE #645CDE #A55CDE

triadic

#645CDE #DE645C #5CDE64

tetradic

#645CDE #DE5C95 #D6DE5C #5CDEA5

square

#645CDE #DE5C95 #D6DE5C #5CDEA5

split-complementary

#645CDE #DEA55C #95DE5C

monochromatic

#28209F #352BD2 #645CDE #948FE8 #C5C2F3

Accessibility & contrast

On white

5.09

#645CDE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#645CDE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CDE

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CDE	#FFFFFF	#000000	##FFFFFF
##645CDE	1.00	5.09	4.13	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E2

Deuteranopia (green-blind)

#0069DB

Tritanopia (blue-blind)

#287B94

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645cde;
/* rgb */ color: rgb(100, 92, 222);
/* oklch */ color: oklch(55.5% 0.192 280.9);

Tailwind

colors: {
  custom: {
    50: '#9a8ae9',
    500: '#645cde',
    950: '#000000',
  },
}

SCSS

$custom: #645cde;
$custom-light: #9a8ae9;
$custom-dark: #000000;

JSON

{
  "hex": "#645cde",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 222
  },
  "hsl": {
    "h": 243.692,
    "s": 66.327,
    "l": 61.569
  },
  "oklch": {
    "l": 0.55465,
    "c": 0.19171,
    "h": 280.9
  },
  "luminance": 0.15638
}

Semantic roles & 50–950 ramp

primary

#645CDE

secondary

#E0E3B3

accent

#CE17C3

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645CDE

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

Preview Lab → · Contrast checker → · Palette generator →