#645CCB#645CCB

#645CCB is a mid, vivid blue. Relative luminance 0.147; OKLCH L 54.1% C 0.167 H 282.5°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#645CCB
RGB	rgb(100, 92, 203)
HSL	hsl(244, 52%, 58%)
HSV	hsv(244, 55%, 80%)
CMYK	cmyk(50.7%, 54.7%, 0%, 20.4%)
CIE-LAB	lab(45.18, 32.97, -56.89)
CIE-LCH	lch(45.18, 65.75, 300.09°)
OKLab	oklab(54.08% 0.0362 -0.1625)
OKLCH	oklch(54.08% 0.167 282.5)
XYZ	xyz(19.8589, 14.6743, 58.2743)
Luminance	0.1467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CCB #C3CB5C

analogous

#5C8CCB #645CCB #9B5CCB

triadic

#645CCB #CB645C #5CCB64

tetradic

#645CCB #CB5C8C #C3CB5C #5CCB9B

square

#645CCB #CB5C8C #C3CB5C #5CCB9B

split-complementary

#645CCB #CB9B5C #8CCB5C

monochromatic

#302A83 #4139B1 #645CCB #908ADA #BCB9E9

Accessibility & contrast

On white

5.34

#645CCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#645CCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CCB

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CCB	#FFFFFF	#000000	##FFFFFF
##645CCB	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#196FCF

Deuteranopia (green-blind)

#0967C9

Tritanopia (blue-blind)

#3C758A

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #645ccb;
/* rgb */ color: rgb(100, 92, 203);
/* oklch */ color: oklch(54.1% 0.167 282.5);

Tailwind

colors: {
  custom: {
    50: '#978adb',
    500: '#645ccb',
    950: '#000000',
  },
}

SCSS

$custom: #645ccb;
$custom-light: #978adb;
$custom-dark: #000000;

JSON

{
  "hex": "#645ccb",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 203
  },
  "hsl": {
    "h": 244.324,
    "s": 51.628,
    "l": 57.843
  },
  "oklch": {
    "l": 0.5408,
    "c": 0.1665,
    "h": 282.5
  },
  "luminance": 0.14675
}

Semantic roles & 50–950 ramp

primary

#645CCB

secondary

#D4D8AB

accent

#DB4DD1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645CCB

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

Preview Lab → · Contrast checker → · Palette generator →