#645AB2#645AB2

#645AB2 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.0% C 0.135 H 285.9°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#645AB2
RGB	rgb(100, 90, 178)
HSL	hsl(247, 36%, 53%)
HSV	hsv(247, 49%, 70%)
CMYK	cmyk(43.8%, 49.4%, 0%, 30.2%)
CIE-LAB	lab(43.12, 26.60, -45.68)
CIE-LCH	lch(43.12, 52.87, 300.21°)
OKLab	oklab(52.03% 0.0369 -0.1296)
OKLCH	oklch(52.03% 0.135 285.9)
XYZ	xyz(16.9453, 13.2353, 43.7727)
Luminance	0.1324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AB2 #A8B25A

analogous

#5A7CB2 #645AB2 #905AB2

triadic

#645AB2 #B2645A #5AB264

tetradic

#645AB2 #B25A7C #A8B25A #5AB290

square

#645AB2 #B25A7C #A8B25A #5AB290

split-complementary

#645AB2 #B2905A #7CB25A

monochromatic

#342E63 #4A428D #645AB2 #8B84C5 #B2ADD9

Accessibility & contrast

On white

5.76

#645AB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#645AB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AB2

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AB2	#FFFFFF	#000000	##FFFFFF
##645AB2	1.00	5.76	3.65	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3568B5

Deuteranopia (green-blind)

#3363B0

Tritanopia (blue-blind)

#4C6C7D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #645ab2;
/* rgb */ color: rgb(100, 90, 178);
/* oklch */ color: oklch(52.0% 0.135 285.9);

Tailwind

colors: {
  custom: {
    50: '#9588c9',
    500: '#645ab2',
    950: '#000000',
  },
}

SCSS

$custom: #645ab2;
$custom-light: #9588c9;
$custom-dark: #000000;

JSON

{
  "hex": "#645ab2",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 178
  },
  "hsl": {
    "h": 246.818,
    "s": 36.364,
    "l": 52.549
  },
  "oklch": {
    "l": 0.52027,
    "c": 0.13478,
    "h": 285.9
  },
  "luminance": 0.13236
}

Semantic roles & 50–950 ramp

primary

#645AB2

secondary

#C3C7A1

accent

#CC5BC0

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #645AB2

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

Preview Lab → · Contrast checker → · Palette generator →