#645CA3#645CA3

#645CA3 is a mid, moderate blue. Relative luminance 0.130; OKLCH L 51.5% C 0.110 H 287.0°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#645CA3
RGB	rgb(100, 92, 163)
HSL	hsl(247, 28%, 50%)
HSV	hsv(247, 44%, 64%)
CMYK	cmyk(38.7%, 43.6%, 0%, 36.1%)
CIE-LAB	lab(42.77, 20.95, -37.38)
CIE-LCH	lch(42.77, 42.85, 299.27°)
OKLab	oklab(51.49% 0.0323 -0.1053)
OKLCH	oklch(51.49% 0.11 287)
XYZ	xyz(15.6917, 13.0075, 36.3272)
Luminance	0.1301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CA3 #9BA35C

analogous

#5C77A3 #645CA3 #885CA3

triadic

#645CA3 #A3645C #5CA364

tetradic

#645CA3 #A35C77 #9BA35C #5CA388

square

#645CA3 #A35C77 #9BA35C #5CA388

split-complementary

#645CA3 #A3885C #77A35C

monochromatic

#343055 #4C467C #645CA3 #8983B9 #AEAACF

Accessibility & contrast

On white

5.83

#645CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#645CA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CA3

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CA3	#FFFFFF	#000000	##FFFFFF
##645CA3	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4467A6

Deuteranopia (green-blind)

#4363A1

Tritanopia (blue-blind)

#536A77

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #645ca3;
/* rgb */ color: rgb(100, 92, 163);
/* oklch */ color: oklch(51.5% 0.110 287.0);

Tailwind

colors: {
  custom: {
    50: '#938abe',
    500: '#645ca3',
    950: '#000000',
  },
}

SCSS

$custom: #645ca3;
$custom-light: #938abe;
$custom-dark: #000000;

JSON

{
  "hex": "#645ca3",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 163
  },
  "hsl": {
    "h": 246.761,
    "s": 27.843,
    "l": 50
  },
  "oklch": {
    "l": 0.51493,
    "c": 0.11013,
    "h": 287
  },
  "luminance": 0.13008
}

Semantic roles & 50–950 ramp

primary

#645CA3

secondary

#BABD9D

accent

#C464B9

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645CA3

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

Preview Lab → · Contrast checker → · Palette generator →