#645ACF#645ACF

#645ACF is a mid, vivid blue. Relative luminance 0.145; OKLCH L 54.0% C 0.175 H 282.7°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#645ACF
RGB	rgb(100, 90, 207)
HSL	hsl(245, 55%, 58%)
HSV	hsv(245, 57%, 81%)
CMYK	cmyk(51.7%, 56.5%, 0%, 18.8%)
CIE-LAB	lab(44.98, 35.41, -59.52)
CIE-LCH	lch(44.98, 69.26, 300.74°)
OKLab	oklab(54.01% 0.0384 -0.1703)
OKLCH	oklch(54.01% 0.175 282.7)
XYZ	xyz(20.1708, 14.5255, 60.7602)
Luminance	0.1453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645ACF #C5CF5A

analogous

#5A8ACF #645ACF #9E5ACF

triadic

#645ACF #CF645A #5ACF64

tetradic

#645ACF #CF5A8A #C5CF5A #5ACF9E

square

#645ACF #CF5A8A #C5CF5A #5ACF9E

split-complementary

#645ACF #CF9E5A #8ACF5A

monochromatic

#302787 #4035B7 #645ACF #9189DD #BDB9EB

Accessibility & contrast

On white

5.38

#645ACF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#645ACF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645ACF

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645ACF	#FFFFFF	#000000	##FFFFFF
##645ACF	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)

#006ED3

Deuteranopia (green-blind)

#0066CD

Tritanopia (blue-blind)

#39758C

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645acf;
/* rgb */ color: rgb(100, 90, 207);
/* oklch */ color: oklch(54.0% 0.175 282.7);

Tailwind

colors: {
  custom: {
    50: '#9889de',
    500: '#645acf',
    950: '#000000',
  },
}

SCSS

$custom: #645acf;
$custom-light: #9889de;
$custom-dark: #000000;

JSON

{
  "hex": "#645acf",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 207
  },
  "hsl": {
    "h": 245.128,
    "s": 54.93,
    "l": 58.235
  },
  "oklch": {
    "l": 0.54012,
    "c": 0.17458,
    "h": 282.7
  },
  "luminance": 0.14527
}

Semantic roles & 50–950 ramp

primary

#645ACF

secondary

#D6DAAB

accent

#DE4AD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645ACF

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

Preview Lab → · Contrast checker → · Palette generator →