#645CB2#645CB2

#645CB2 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.4% C 0.132 H 285.1°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#645CB2
RGB	rgb(100, 92, 178)
HSL	hsl(246, 36%, 53%)
HSV	hsv(246, 48%, 70%)
CMYK	cmyk(43.8%, 48.3%, 0%, 30.2%)
CIE-LAB	lab(43.62, 25.37, -44.88)
CIE-LCH	lch(43.62, 51.55, 299.48°)
OKLab	oklab(52.41% 0.0344 -0.1272)
OKLCH	oklch(52.41% 0.132 285.1)
XYZ	xyz(17.1162, 13.5773, 43.8297)
Luminance	0.1358 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CB2 #AAB25C

analogous

#5C7FB2 #645CB2 #8F5CB2

triadic

#645CB2 #B2645C #5CB264

tetradic

#645CB2 #B25C7F #AAB25C #5CB28F

square

#645CB2 #B25C7F #AAB25C #5CB28F

split-complementary

#645CB2 #B28F5C #7FB25C

monochromatic

#342F64 #4A438E #645CB2 #8C86C6 #B3AFD9

Accessibility & contrast

On white

5.65

#645CB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#645CB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CB2

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CB2	#FFFFFF	#000000	##FFFFFF
##645CB2	1.00	5.65	3.72	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396AB5

Deuteranopia (green-blind)

#3664B0

Tritanopia (blue-blind)

#4C6E7E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #645cb2;
/* rgb */ color: rgb(100, 92, 178);
/* oklch */ color: oklch(52.4% 0.132 285.1);

Tailwind

colors: {
  custom: {
    50: '#948ac9',
    500: '#645cb2',
    950: '#000000',
  },
}

SCSS

$custom: #645cb2;
$custom-light: #948ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#645cb2",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 178
  },
  "hsl": {
    "h": 245.581,
    "s": 35.833,
    "l": 52.941
  },
  "oklch": {
    "l": 0.52407,
    "c": 0.13181,
    "h": 285.1
  },
  "luminance": 0.13578
}

Semantic roles & 50–950 ramp

primary

#645CB2

secondary

#C4C7A2

accent

#CC5CC1

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #645CB2

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

Preview Lab → · Contrast checker → · Palette generator →