#645CCF#645CCF

#645CCF is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.4% C 0.172 H 282.2°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#645CCF
RGB	rgb(100, 92, 207)
HSL	hsl(244, 55%, 59%)
HSV	hsv(244, 56%, 81%)
CMYK	cmyk(51.7%, 55.6%, 0%, 18.8%)
CIE-LAB	lab(45.45, 34.20, -58.76)
CIE-LCH	lch(45.45, 67.99, 300.20°)
OKLab	oklab(54.36% 0.0363 -0.168)
OKLCH	oklch(54.36% 0.172 282.2)
XYZ	xyz(20.3417, 14.8675, 60.8172)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CCF #C7CF5C

analogous

#5C8DCF #645CCF #9D5CCF

triadic

#645CCF #CF645C #5CCF64

tetradic

#645CCF #CF5C8D #C7CF5C #5CCF9D

square

#645CCF #CF5C8D #C7CF5C #5CCF9D

split-complementary

#645CCF #CF9D5C #8DCF5C

monochromatic

#2F2888 #3F36B8 #645CCF #918BDD #BEBBEB

Accessibility & contrast

On white

5.28

#645CCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#645CCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CCF

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CCF	#FFFFFF	#000000	##FFFFFF
##645CCF	1.00	5.28	3.97	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E70D3

Deuteranopia (green-blind)

#0068CD

Tritanopia (blue-blind)

#39768C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645ccf;
/* rgb */ color: rgb(100, 92, 207);
/* oklch */ color: oklch(54.4% 0.172 282.2);

Tailwind

colors: {
  custom: {
    50: '#988ade',
    500: '#645ccf',
    950: '#000000',
  },
}

SCSS

$custom: #645ccf;
$custom-light: #988ade;
$custom-dark: #000000;

JSON

{
  "hex": "#645ccf",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 207
  },
  "hsl": {
    "h": 244.174,
    "s": 54.502,
    "l": 58.627
  },
  "oklch": {
    "l": 0.54364,
    "c": 0.1719,
    "h": 282.2
  },
  "luminance": 0.14869
}

Semantic roles & 50–950 ramp

primary

#645CCF

secondary

#D7DAAD

accent

#DE4AD4

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645CCF

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

Preview Lab → · Contrast checker → · Palette generator →