#645ACA#645ACA

#645ACA is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.7% C 0.168 H 283.2°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#645ACA
RGB	rgb(100, 90, 202)
HSL	hsl(245, 51%, 57%)
HSV	hsv(245, 55%, 79%)
CMYK	cmyk(50.5%, 55.4%, 0%, 20.8%)
CIE-LAB	lab(44.64, 33.87, -57.20)
CIE-LCH	lch(44.64, 66.47, 300.63°)
OKLab	oklab(53.65% 0.0384 -0.1634)
OKLCH	oklch(53.65% 0.168 283.2)
XYZ	xyz(19.5691, 14.2849, 57.5918)
Luminance	0.1429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645ACA #C0CA5A

analogous

#5A88CA #645ACA #9C5ACA

triadic

#645ACA #CA645A #5ACA64

tetradic

#645ACA #CA5A88 #C0CA5A #5ACA9C

square

#645ACA #CA5A88 #C0CA5A #5ACA9C

split-complementary

#645ACA #CA9C5A #88CA5A

monochromatic

#312980 #4338AF #645ACA #9088D9 #BBB7E8

Accessibility & contrast

On white

5.44

#645ACA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#645ACA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645ACA

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645ACA	#FFFFFF	#000000	##FFFFFF
##645ACA	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#126DCE

Deuteranopia (green-blind)

#0166C8

Tritanopia (blue-blind)

#3D7389

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645aca;
/* rgb */ color: rgb(100, 90, 202);
/* oklch */ color: oklch(53.7% 0.168 283.2);

Tailwind

colors: {
  custom: {
    50: '#9789db',
    500: '#645aca',
    950: '#000000',
  },
}

SCSS

$custom: #645aca;
$custom-light: #9789db;
$custom-dark: #000000;

JSON

{
  "hex": "#645aca",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 202
  },
  "hsl": {
    "h": 245.357,
    "s": 51.376,
    "l": 57.255
  },
  "oklch": {
    "l": 0.53653,
    "c": 0.16788,
    "h": 283.2
  },
  "luminance": 0.14286
}

Semantic roles & 50–950 ramp

primary

#645ACA

secondary

#D3D7A9

accent

#DB4DCE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645ACA

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

Preview Lab → · Contrast checker → · Palette generator →