#645DCB#645DCB

#645DCB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 54.3% C 0.165 H 282.3°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#645DCB
RGB	rgb(100, 93, 203)
HSL	hsl(244, 51%, 58%)
HSV	hsv(244, 54%, 80%)
CMYK	cmyk(50.7%, 54.2%, 0%, 20.4%)
CIE-LAB	lab(45.43, 32.36, -56.50)
CIE-LCH	lch(45.43, 65.11, 299.80°)
OKLab	oklab(54.26% 0.0351 -0.1614)
OKLCH	oklch(54.26% 0.165 282.3)
XYZ	xyz(19.9461, 14.8487, 58.3034)
Luminance	0.1485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DCB #C4CB5D

analogous

#5D8DCB #645DCB #9B5DCB

triadic

#645DCB #CB645D #5DCB64

tetradic

#645DCB #CB5D8D #C4CB5D #5DCB9B

square

#645DCB #CB5D8D #C4CB5D #5DCB9B

split-complementary

#645DCB #CB9B5D #8DCB5D

monochromatic

#302A83 #4139B2 #645DCB #908BDA #BDBAE9

Accessibility & contrast

On white

5.29

#645DCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#645DCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DCB

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DCB	#FFFFFF	#000000	##FFFFFF
##645DCB	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D6FCF

Deuteranopia (green-blind)

#0F68C9

Tritanopia (blue-blind)

#3C768B

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645dcb;
/* rgb */ color: rgb(100, 93, 203);
/* oklch */ color: oklch(54.3% 0.165 282.3);

Tailwind

colors: {
  custom: {
    50: '#978bdb',
    500: '#645dcb',
    950: '#000000',
  },
}

SCSS

$custom: #645dcb;
$custom-light: #978bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#645dcb",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 203
  },
  "hsl": {
    "h": 243.818,
    "s": 51.402,
    "l": 58.039
  },
  "oklch": {
    "l": 0.5426,
    "c": 0.16514,
    "h": 282.3
  },
  "luminance": 0.1485
}

Semantic roles & 50–950 ramp

primary

#645DCB

secondary

#D5D8AC

accent

#DB4DD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645DCB

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

Preview Lab → · Contrast checker → · Palette generator →