#645CC8#645CC8

#645CC8 is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.9% C 0.162 H 282.8°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#645CC8
RGB	rgb(100, 92, 200)
HSL	hsl(244, 50%, 57%)
HSV	hsv(244, 54%, 78%)
CMYK	cmyk(50%, 54%, 0%, 21.6%)
CIE-LAB	lab(44.99, 32.04, -55.48)
CIE-LCH	lch(44.99, 64.07, 300.01°)
OKLab	oklab(53.87% 0.0361 -0.1584)
OKLCH	oklch(53.87% 0.162 282.8)
XYZ	xyz(19.5049, 14.5327, 56.4097)
Luminance	0.1453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CC8 #C0C85C

analogous

#5C8AC8 #645CC8 #9A5CC8

triadic

#645CC8 #C8645C #5CC864

tetradic

#645CC8 #C85C8A #C0C85C #5CC89A

square

#645CC8 #C85C8A #C0C85C #5CC89A

split-complementary

#645CC8 #C89A5C #8AC85C

monochromatic

#312B7F #433AAD #645CC8 #908AD7 #BBB8E7

Accessibility & contrast

On white

5.38

#645CC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#645CC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CC8

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CC8	#FFFFFF	#000000	##FFFFFF
##645CC8	1.00	5.38	3.91	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F6ECC

Deuteranopia (green-blind)

#1567C6

Tritanopia (blue-blind)

#3E7489

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645cc8;
/* rgb */ color: rgb(100, 92, 200);
/* oklch */ color: oklch(53.9% 0.162 282.8);

Tailwind

colors: {
  custom: {
    50: '#978ad9',
    500: '#645cc8',
    950: '#000000',
  },
}

SCSS

$custom: #645cc8;
$custom-light: #978ad9;
$custom-dark: #000000;

JSON

{
  "hex": "#645cc8",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 200
  },
  "hsl": {
    "h": 244.444,
    "s": 49.541,
    "l": 57.255
  },
  "oklch": {
    "l": 0.5387,
    "c": 0.16244,
    "h": 282.8
  },
  "luminance": 0.14534
}

Semantic roles & 50–950 ramp

primary

#645CC8

secondary

#D3D6AA

accent

#D94FCF

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645CC8

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

Preview Lab → · Contrast checker → · Palette generator →