#645CDA#645CDA

#645CDA is a mid, vivid blue. Relative luminance 0.154; OKLCH L 55.2% C 0.186 H 281.2°. Best body text is #FFFFFF at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#645CDA
RGB	rgb(100, 92, 218)
HSL	hsl(244, 63%, 61%)
HSV	hsv(244, 58%, 85%)
CMYK	cmyk(54.1%, 57.8%, 0%, 14.5%)
CIE-LAB	lab(46.21, 37.61, -63.82)
CIE-LCH	lch(46.21, 74.08, 300.51°)
OKLab	oklab(55.17% 0.0363 -0.1829)
OKLCH	oklch(55.17% 0.186 281.2)
XYZ	xyz(21.7336, 15.4242, 68.1480)
Luminance	0.1543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CDA #D2DA5C

analogous

#5C93DA #645CDA #A35CDA

triadic

#645CDA #DA645C #5CDA64

tetradic

#645CDA #DA5C93 #D2DA5C #5CDAA3

square

#645CDA #DA5C93 #D2DA5C #5CDAA3

split-complementary

#645CDA #DAA35C #93DA5C

monochromatic

#2A2399 #382ECB #645CDA #938EE5 #C3C0F1

Accessibility & contrast

On white

5.14

#645CDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#645CDA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CDA

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CDA	#FFFFFF	#000000	##FFFFFF
##645CDA	1.00	5.14	4.09	5.14
#FFFFFF	5.14	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0072DE

Deuteranopia (green-blind)

#0069D7

Tritanopia (blue-blind)

#2D7A92

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645cda;
/* rgb */ color: rgb(100, 92, 218);
/* oklch */ color: oklch(55.2% 0.186 281.2);

Tailwind

colors: {
  custom: {
    50: '#9a8ae6',
    500: '#645cda',
    950: '#000000',
  },
}

SCSS

$custom: #645cda;
$custom-light: #9a8ae6;
$custom-dark: #000000;

JSON

{
  "hex": "#645cda",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 218
  },
  "hsl": {
    "h": 243.81,
    "s": 63,
    "l": 60.784
  },
  "oklch": {
    "l": 0.55166,
    "c": 0.18649,
    "h": 281.2
  },
  "luminance": 0.15426
}

Semantic roles & 50–950 ramp

primary

#645CDA

secondary

#DEE1B1

accent

#CB1BC0

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645CDA

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

Preview Lab → · Contrast checker → · Palette generator →