#645CA5#645CA5

#645CA5 is a mid, moderate blue. Relative luminance 0.131; OKLCH L 51.6% C 0.113 H 286.8°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#645CA5
RGB	rgb(100, 92, 165)
HSL	hsl(247, 29%, 50%)
HSV	hsv(247, 44%, 65%)
CMYK	cmyk(39.4%, 44.2%, 0%, 35.3%)
CIE-LAB	lab(42.88, 21.53, -38.39)
CIE-LCH	lch(42.88, 44.02, 299.29°)
OKLab	oklab(51.61% 0.0326 -0.1082)
OKLCH	oklch(51.61% 0.113 286.8)
XYZ	xyz(15.8723, 13.0797, 37.2784)
Luminance	0.1308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CA5 #9DA55C

analogous

#5C78A5 #645CA5 #885CA5

triadic

#645CA5 #A5645C #5CA564

tetradic

#645CA5 #A55C78 #9DA55C #5CA588

square

#645CA5 #A55C78 #9DA55C #5CA588

split-complementary

#645CA5 #A5885C #78A55C

monochromatic

#343057 #4C467E #645CA5 #8983BB #AFABD1

Accessibility & contrast

On white

5.81

#645CA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#645CA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CA5

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CA5	#FFFFFF	#000000	##FFFFFF
##645CA5	1.00	5.81	3.62	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4267A8

Deuteranopia (green-blind)

#4163A3

Tritanopia (blue-blind)

#526A78

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #645ca5;
/* rgb */ color: rgb(100, 92, 165);
/* oklch */ color: oklch(51.6% 0.113 286.8);

Tailwind

colors: {
  custom: {
    50: '#938ac0',
    500: '#645ca5',
    950: '#000000',
  },
}

SCSS

$custom: #645ca5;
$custom-light: #938ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#645ca5",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 165
  },
  "hsl": {
    "h": 246.575,
    "s": 28.854,
    "l": 50.392
  },
  "oklch": {
    "l": 0.5161,
    "c": 0.11305,
    "h": 286.8
  },
  "luminance": 0.1308
}

Semantic roles & 50–950 ramp

primary

#645CA5

secondary

#BBBF9E

accent

#C563BA

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645CA5

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

Preview Lab → · Contrast checker → · Palette generator →