#645DCC#645DCC

#645DCC is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.3% C 0.167 H 282.2°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#645DCC
RGB	rgb(100, 93, 204)
HSL	hsl(244, 52%, 58%)
HSV	hsv(244, 54%, 80%)
CMYK	cmyk(51%, 54.4%, 0%, 20%)
CIE-LAB	lab(45.49, 32.67, -56.97)
CIE-LCH	lch(45.49, 65.67, 299.83°)
OKLab	oklab(54.33% 0.0351 -0.1628)
OKLCH	oklch(54.33% 0.167 282.2)
XYZ	xyz(20.0656, 14.8966, 58.9330)
Luminance	0.1490 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DCC #C5CC5D

analogous

#5D8DCC #645DCC #9B5DCC

triadic

#645DCC #CC645D #5DCC64

tetradic

#645DCC #CC5D8D #C5CC5D #5DCC9B

square

#645DCC #CC5D8D #C5CC5D #5DCC9B

split-complementary

#645DCC #CC9B5D #8DCC5D

monochromatic

#302A85 #4038B3 #645DCC #918CDB #BDBAE9

Accessibility & contrast

On white

5.28

#645DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#645DCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DCC

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DCC	#FFFFFF	#000000	##FFFFFF
##645DCC	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B70D0

Deuteranopia (green-blind)

#0B68CA

Tritanopia (blue-blind)

#3B768B

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645dcc;
/* rgb */ color: rgb(100, 93, 204);
/* oklch */ color: oklch(54.3% 0.167 282.2);

Tailwind

colors: {
  custom: {
    50: '#988bdc',
    500: '#645dcc',
    950: '#000000',
  },
}

SCSS

$custom: #645dcc;
$custom-light: #988bdc;
$custom-dark: #000000;

JSON

{
  "hex": "#645dcc",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 204
  },
  "hsl": {
    "h": 243.784,
    "s": 52.113,
    "l": 58.235
  },
  "oklch": {
    "l": 0.5433,
    "c": 0.1665,
    "h": 282.2
  },
  "luminance": 0.14898
}

Semantic roles & 50–950 ramp

primary

#645DCC

secondary

#D6D9AC

accent

#DC4CD3

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645DCC

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

Preview Lab → · Contrast checker → · Palette generator →