#645CDD#645CDD

#645CDD is a mid, vivid blue. Relative luminance 0.156; OKLCH L 55.4% C 0.190 H 281.0°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#645CDD
RGB	rgb(100, 92, 221)
HSL	hsl(244, 65%, 61%)
HSV	hsv(244, 58%, 87%)
CMYK	cmyk(54.8%, 58.4%, 0%, 13.3%)
CIE-LAB	lab(46.42, 38.54, -65.18)
CIE-LCH	lch(46.42, 75.72, 300.59°)
OKLab	oklab(55.39% 0.0362 -0.1869)
OKLCH	oklch(55.39% 0.19 281)
XYZ	xyz(22.1298, 15.5827, 70.2342)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CDD #D5DD5C

analogous

#5C95DD #645CDD #A55CDD

triadic

#645CDD #DD645C #5CDD64

tetradic

#645CDD #DD5C95 #D5DD5C #5CDDA5

square

#645CDD #DD5C95 #D5DD5C #5CDDA5

split-complementary

#645CDD #DDA55C #95DD5C

monochromatic

#29219E #362BD0 #645CDD #948FE8 #C4C1F2

Accessibility & contrast

On white

5.10

#645CDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#645CDD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CDD

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CDD	#FFFFFF	#000000	##FFFFFF
##645CDD	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E1

Deuteranopia (green-blind)

#0069DA

Tritanopia (blue-blind)

#297B94

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645cdd;
/* rgb */ color: rgb(100, 92, 221);
/* oklch */ color: oklch(55.4% 0.190 281.0);

Tailwind

colors: {
  custom: {
    50: '#9a8ae8',
    500: '#645cdd',
    950: '#000000',
  },
}

SCSS

$custom: #645cdd;
$custom-light: #9a8ae8;
$custom-dark: #000000;

JSON

{
  "hex": "#645cdd",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 221
  },
  "hsl": {
    "h": 243.721,
    "s": 65.482,
    "l": 61.373
  },
  "oklch": {
    "l": 0.55389,
    "c": 0.19041,
    "h": 281
  },
  "luminance": 0.15584
}

Semantic roles & 50–950 ramp

primary

#645CDD

secondary

#E0E3B2

accent

#CD18C2

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645CDD

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

Preview Lab → · Contrast checker → · Palette generator →