#645CA4#645CA4

#645CA4 is a mid, moderate blue. Relative luminance 0.130; OKLCH L 51.6% C 0.112 H 286.9°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#645CA4
RGB	rgb(100, 92, 164)
HSL	hsl(247, 28%, 50%)
HSV	hsv(247, 44%, 64%)
CMYK	cmyk(39%, 43.9%, 0%, 35.7%)
CIE-LAB	lab(42.83, 21.24, -37.89)
CIE-LCH	lch(42.83, 43.44, 299.28°)
OKLab	oklab(51.55% 0.0324 -0.1068)
OKLCH	oklch(51.55% 0.112 286.9)
XYZ	xyz(15.7817, 13.0434, 36.8009)
Luminance	0.1304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CA4 #9CA45C

analogous

#5C78A4 #645CA4 #885CA4

triadic

#645CA4 #A4645C #5CA464

tetradic

#645CA4 #A45C78 #9CA45C #5CA488

square

#645CA4 #A45C78 #9CA45C #5CA488

split-complementary

#645CA4 #A4885C #78A45C

monochromatic

#343056 #4C467D #645CA4 #8983BA #AFABD0

Accessibility & contrast

On white

5.82

#645CA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#645CA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CA4

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CA4	#FFFFFF	#000000	##FFFFFF
##645CA4	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4367A7

Deuteranopia (green-blind)

#4263A2

Tritanopia (blue-blind)

#526A78

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #645ca4;
/* rgb */ color: rgb(100, 92, 164);
/* oklch */ color: oklch(51.6% 0.112 286.9);

Tailwind

colors: {
  custom: {
    50: '#938abf',
    500: '#645ca4',
    950: '#000000',
  },
}

SCSS

$custom: #645ca4;
$custom-light: #938abf;
$custom-dark: #000000;

JSON

{
  "hex": "#645ca4",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 164
  },
  "hsl": {
    "h": 246.667,
    "s": 28.346,
    "l": 50.196
  },
  "oklch": {
    "l": 0.51551,
    "c": 0.11159,
    "h": 286.9
  },
  "luminance": 0.13044
}

Semantic roles & 50–950 ramp

primary

#645CA4

secondary

#BABE9E

accent

#C563BA

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645CA4

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

Preview Lab → · Contrast checker → · Palette generator →