#645AC8#645AC8

#645AC8 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.5% C 0.165 H 283.4°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#645AC8
RGB	rgb(100, 90, 200)
HSL	hsl(245, 50%, 57%)
HSV	hsv(245, 55%, 78%)
CMYK	cmyk(50%, 55%, 0%, 21.6%)
CIE-LAB	lab(44.51, 33.26, -56.26)
CIE-LCH	lch(44.51, 65.35, 300.59°)
OKLab	oklab(53.51% 0.0383 -0.1607)
OKLCH	oklch(53.51% 0.165 283.4)
XYZ	xyz(19.3339, 14.1908, 56.3527)
Luminance	0.1419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AC8 #BEC85A

analogous

#5A87C8 #645AC8 #9B5AC8

triadic

#645AC8 #C8645A #5AC864

tetradic

#645AC8 #C85A87 #BEC85A #5AC89B

square

#645AC8 #C85A87 #BEC85A #5AC89B

split-complementary

#645AC8 #C89B5A #87C85A

monochromatic

#322A7E #4439AC #645AC8 #8F88D7 #BAB6E7

Accessibility & contrast

On white

5.47

#645AC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#645AC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AC8

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AC8	#FFFFFF	#000000	##FFFFFF
##645AC8	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#176DCC

Deuteranopia (green-blind)

#0A66C6

Tritanopia (blue-blind)

#3E7388

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645ac8;
/* rgb */ color: rgb(100, 90, 200);
/* oklch */ color: oklch(53.5% 0.165 283.4);

Tailwind

colors: {
  custom: {
    50: '#9789d9',
    500: '#645ac8',
    950: '#000000',
  },
}

SCSS

$custom: #645ac8;
$custom-light: #9789d9;
$custom-dark: #000000;

JSON

{
  "hex": "#645ac8",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 200
  },
  "hsl": {
    "h": 245.455,
    "s": 50,
    "l": 56.863
  },
  "oklch": {
    "l": 0.53511,
    "c": 0.16518,
    "h": 283.4
  },
  "luminance": 0.14192
}

Semantic roles & 50–950 ramp

primary

#645AC8

secondary

#D1D5A8

accent

#DA4ECD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645AC8

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

Preview Lab → · Contrast checker → · Palette generator →