#645DFF#645DFF

#645DFF is a mid, highly saturated blue. Relative luminance 0.178; OKLCH L 58.2% C 0.232 H 278.3°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#645DFF
RGB	rgb(100, 93, 255)
HSL	hsl(243, 100%, 68%)
HSV	hsv(243, 64%, 100%)
CMYK	cmyk(60.8%, 63.5%, 0%, 0%)
CIE-LAB	lab(49.20, 48.52, -79.75)
CIE-LCH	lch(49.20, 93.35, 301.32°)
OKLab	oklab(58.22% 0.0335 -0.2297)
OKLCH	oklch(58.22% 0.232 278.3)
XYZ	xyz(27.2141, 17.7559, 96.5815)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DFF #F8FF5D

analogous

#5DA7FF #645DFF #B55DFF

triadic

#645DFF #FF645D #5DFF64

tetradic

#645DFF #FF5DA7 #F8FF5D #5DFFB5

square

#645DFF #FF5DA7 #F8FF5D #5DFFB5

split-complementary

#645DFF #FFB55D #A7FF5D

monochromatic

#0A00E2 #2920FF #645DFF #9F9AFF #D9D7FF

Accessibility & contrast

On white

4.61

#645DFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#645DFF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #645DFF

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DFF	#FFFFFF	#000000	##FFFFFF
##645DFF	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CFF

Deuteranopia (green-blind)

#006EFC

Tritanopia (blue-blind)

#0086A6

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #645dff;
/* rgb */ color: rgb(100, 93, 255);
/* oklch */ color: oklch(58.2% 0.232 278.3);

Tailwind

colors: {
  custom: {
    50: '#9f8cff',
    500: '#645dff',
    950: '#000000',
  },
}

SCSS

$custom: #645dff;
$custom-light: #9f8cff;
$custom-dark: #000000;

JSON

{
  "hex": "#645dff",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 255
  },
  "hsl": {
    "h": 242.593,
    "s": 100,
    "l": 68.235
  },
  "oklch": {
    "l": 0.58223,
    "c": 0.23216,
    "h": 278.3
  },
  "luminance": 0.17758
}

Semantic roles & 50–950 ramp

primary

#645DFF

secondary

#F2F4C3

accent

#E600DC

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645DFF

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

Preview Lab → · Contrast checker → · Palette generator →