#645DDD#645DDD

#645DDD is a mid, vivid blue. Relative luminance 0.158; OKLCH L 55.6% C 0.189 H 280.7°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#645DDD
RGB	rgb(100, 93, 221)
HSL	hsl(243, 65%, 62%)
HSV	hsv(243, 58%, 87%)
CMYK	cmyk(54.8%, 57.9%, 0%, 13.3%)
CIE-LAB	lab(46.65, 37.94, -64.81)
CIE-LCH	lch(46.65, 75.09, 300.35°)
OKLab	oklab(55.56% 0.0352 -0.1858)
OKLCH	oklch(55.56% 0.189 280.7)
XYZ	xyz(22.2170, 15.7571, 70.2633)
Luminance	0.1576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DDD #D6DD5D

analogous

#5D96DD #645DDD #A45DDD

triadic

#645DDD #DD645D #5DDD64

tetradic

#645DDD #DD5D96 #D6DD5D #5DDDA4

square

#645DDD #DD5D96 #D6DD5D #5DDDA4

split-complementary

#645DDD #DDA45D #96DD5D

monochromatic

#28219E #352CD1 #645DDD #9490E8 #C5C2F2

Accessibility & contrast

On white

5.06

#645DDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#645DDD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DDD

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DDD	#FFFFFF	#000000	##FFFFFF
##645DDD	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E1

Deuteranopia (green-blind)

#006ADA

Tritanopia (blue-blind)

#297B94

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645ddd;
/* rgb */ color: rgb(100, 93, 221);
/* oklch */ color: oklch(55.6% 0.189 280.7);

Tailwind

colors: {
  custom: {
    50: '#9a8be8',
    500: '#645ddd',
    950: '#000000',
  },
}

SCSS

$custom: #645ddd;
$custom-light: #9a8be8;
$custom-dark: #000000;

JSON

{
  "hex": "#645ddd",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 221
  },
  "hsl": {
    "h": 243.281,
    "s": 65.306,
    "l": 61.569
  },
  "oklch": {
    "l": 0.55561,
    "c": 0.18912,
    "h": 280.7
  },
  "luminance": 0.15758
}

Semantic roles & 50–950 ramp

primary

#645DDD

secondary

#E0E3B3

accent

#CD18C3

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645DDD

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

Preview Lab → · Contrast checker → · Palette generator →