#645DD4#645DD4

#645DD4 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 54.9% C 0.177 H 281.5°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#645DD4
RGB	rgb(100, 93, 212)
HSL	hsl(244, 58%, 60%)
HSV	hsv(244, 56%, 83%)
CMYK	cmyk(52.8%, 56.1%, 0%, 16.9%)
CIE-LAB	lab(46.03, 35.14, -60.69)
CIE-LCH	lch(46.03, 70.13, 300.07°)
OKLab	oklab(54.9% 0.0353 -0.1737)
OKLCH	oklch(54.9% 0.177 281.5)
XYZ	xyz(21.0499, 15.2903, 64.1167)
Luminance	0.1529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DD4 #CDD45D

analogous

#5D92D4 #645DD4 #9F5DD4

triadic

#645DD4 #D4645D #5DD464

tetradic

#645DD4 #D45D92 #CDD45D #5DD49F

square

#645DD4 #D45D92 #CDD45D #5DD49F

split-complementary

#645DD4 #D49F5D #92D45D

monochromatic

#2D2690 #3B33C1 #645DD4 #928DE1 #C1BEEE

Accessibility & contrast

On white

5.17

#645DD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#645DD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DD4

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DD4	#FFFFFF	#000000	##FFFFFF
##645DD4	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071D8

Deuteranopia (green-blind)

#0069D2

Tritanopia (blue-blind)

#34788F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645dd4;
/* rgb */ color: rgb(100, 93, 212);
/* oklch */ color: oklch(54.9% 0.177 281.5);

Tailwind

colors: {
  custom: {
    50: '#998be2',
    500: '#645dd4',
    950: '#000000',
  },
}

SCSS

$custom: #645dd4;
$custom-light: #998be2;
$custom-dark: #000000;

JSON

{
  "hex": "#645dd4",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 212
  },
  "hsl": {
    "h": 243.529,
    "s": 58.049,
    "l": 59.804
  },
  "oklch": {
    "l": 0.549,
    "c": 0.17724,
    "h": 281.5
  },
  "luminance": 0.15291
}

Semantic roles & 50–950 ramp

primary

#645DD4

secondary

#DBDDAF

accent

#E147D8

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #645DD4

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

Preview Lab → · Contrast checker → · Palette generator →