#645DD8#645DD8

#645DD8 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 55.2% C 0.183 H 281.1°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#645DD8
RGB	rgb(100, 93, 216)
HSL	hsl(243, 61%, 61%)
HSV	hsv(243, 57%, 85%)
CMYK	cmyk(53.7%, 56.9%, 0%, 15.3%)
CIE-LAB	lab(46.30, 36.38, -62.53)
CIE-LCH	lch(46.30, 72.34, 300.20°)
OKLab	oklab(55.19% 0.0353 -0.1791)
OKLCH	oklch(55.19% 0.183 281.1)
XYZ	xyz(21.5607, 15.4946, 66.8071)
Luminance	0.1550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DD8 #D1D85D

analogous

#5D93D8 #645DD8 #A25DD8

triadic

#645DD8 #D8645D #5DD864

tetradic

#645DD8 #D85D93 #D1D85D #5DD8A2

square

#645DD8 #D85D93 #D1D85D #5DD8A2

split-complementary

#645DD8 #D8A25D #93D85D

monochromatic

#2B2496 #3930C8 #645DD8 #938EE4 #C2C0F0

Accessibility & contrast

On white

5.12

#645DD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#645DD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DD8

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DD8	#FFFFFF	#000000	##FFFFFF
##645DD8	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0072DC

Deuteranopia (green-blind)

#0069D5

Tritanopia (blue-blind)

#2F7A91

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645dd8;
/* rgb */ color: rgb(100, 93, 216);
/* oklch */ color: oklch(55.2% 0.183 281.1);

Tailwind

colors: {
  custom: {
    50: '#998be5',
    500: '#645dd8',
    950: '#000000',
  },
}

SCSS

$custom: #645dd8;
$custom-light: #998be5;
$custom-dark: #000000;

JSON

{
  "hex": "#645dd8",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 216
  },
  "hsl": {
    "h": 243.415,
    "s": 61.194,
    "l": 60.588
  },
  "oklch": {
    "l": 0.55191,
    "c": 0.18255,
    "h": 281.1
  },
  "luminance": 0.15496
}

Semantic roles & 50–950 ramp

primary

#645DD8

secondary

#DDE0B1

accent

#C91DBF

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0F0C16

muted

#7E7D84

Preview Lab

Preview with #645DD8

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

Preview Lab → · Contrast checker → · Palette generator →