#645DC7#645DC7

#645DC7 is a mid, vivid blue. Relative luminance 0.147; OKLCH L 54.0% C 0.160 H 282.6°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#645DC7
RGB	rgb(100, 93, 199)
HSL	hsl(244, 49%, 57%)
HSV	hsv(244, 53%, 78%)
CMYK	cmyk(49.7%, 53.3%, 0%, 22%)
CIE-LAB	lab(45.17, 31.13, -54.62)
CIE-LCH	lch(45.17, 62.86, 299.68°)
OKLab	oklab(53.98% 0.0349 -0.1558)
OKLCH	oklch(53.98% 0.16 282.6)
XYZ	xyz(19.4756, 14.6605, 55.8253)
Luminance	0.1466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DC7 #C0C75D

analogous

#5D8BC7 #645DC7 #995DC7

triadic

#645DC7 #C7645D #5DC764

tetradic

#645DC7 #C75D8B #C0C75D #5DC799

square

#645DC7 #C75D8B #C0C75D #5DC799

split-complementary

#645DC7 #C7995D #8BC75D

monochromatic

#312C7E #433BAC #645DC7 #908AD7 #BBB8E6

Accessibility & contrast

On white

5.34

#645DC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#645DC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DC7

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DC7	#FFFFFF	#000000	##FFFFFF
##645DC7	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#246ECB

Deuteranopia (green-blind)

#1B67C5

Tritanopia (blue-blind)

#3F7489

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #645dc7;
/* rgb */ color: rgb(100, 93, 199);
/* oklch */ color: oklch(54.0% 0.160 282.6);

Tailwind

colors: {
  custom: {
    50: '#978bd9',
    500: '#645dc7',
    950: '#000000',
  },
}

SCSS

$custom: #645dc7;
$custom-light: #978bd9;
$custom-dark: #000000;

JSON

{
  "hex": "#645dc7",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 199
  },
  "hsl": {
    "h": 243.962,
    "s": 48.624,
    "l": 57.255
  },
  "oklch": {
    "l": 0.53982,
    "c": 0.1597,
    "h": 282.6
  },
  "luminance": 0.14662
}

Semantic roles & 50–950 ramp

primary

#645DC7

secondary

#D3D5AA

accent

#D850CF

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645DC7

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

Preview Lab → · Contrast checker → · Palette generator →