#645FB2#645FB2

#645FB2 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.0% C 0.127 H 283.9°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#645FB2
RGB	rgb(100, 95, 178)
HSL	hsl(244, 35%, 54%)
HSV	hsv(244, 47%, 70%)
CMYK	cmyk(43.8%, 46.6%, 0%, 30.2%)
CIE-LAB	lab(44.39, 23.52, -43.66)
CIE-LCH	lch(44.39, 49.59, 298.31°)
OKLab	oklab(52.99% 0.0306 -0.1236)
OKLCH	oklch(52.99% 0.127 283.9)
XYZ	xyz(17.3813, 14.1074, 43.9180)
Luminance	0.1411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FB2 #ADB25F

analogous

#5F83B2 #645FB2 #8D5FB2

triadic

#645FB2 #B2645F #5FB264

tetradic

#645FB2 #B25F83 #ADB25F #5FB28D

square

#645FB2 #B25F83 #ADB25F #5FB28D

split-complementary

#645FB2 #B28D5F #83B25F

monochromatic

#343166 #49458F #645FB2 #8C88C6 #B4B2DA

Accessibility & contrast

On white

5.50

#645FB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#645FB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FB2

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FB2	#FFFFFF	#000000	##FFFFFF
##645FB2	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E6CB5

Deuteranopia (green-blind)

#3B66B0

Tritanopia (blue-blind)

#4C7080

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645fb2;
/* rgb */ color: rgb(100, 95, 178);
/* oklch */ color: oklch(53.0% 0.127 283.9);

Tailwind

colors: {
  custom: {
    50: '#948cc9',
    500: '#645fb2',
    950: '#000000',
  },
}

SCSS

$custom: #645fb2;
$custom-light: #948cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#645fb2",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 178
  },
  "hsl": {
    "h": 243.614,
    "s": 35.021,
    "l": 53.529
  },
  "oklch": {
    "l": 0.52985,
    "c": 0.12737,
    "h": 283.9
  },
  "luminance": 0.14108
}

Semantic roles & 50–950 ramp

primary

#645FB2

secondary

#C6C8A5

accent

#CB5DC4

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0D0C13

muted

#7E7D82

Preview Lab

Preview with #645FB2

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

Preview Lab → · Contrast checker → · Palette generator →