#645CFF#645CFF

#645CFF is a mid, highly saturated blue. Relative luminance 0.176; OKLCH L 58.1% C 0.233 H 278.4°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#645CFF
RGB	rgb(100, 92, 255)
HSL	hsl(243, 100%, 68%)
HSV	hsv(243, 64%, 100%)
CMYK	cmyk(60.8%, 63.9%, 0%, 0%)
CIE-LAB	lab(48.98, 49.09, -80.10)
CIE-LCH	lch(48.98, 93.95, 301.50°)
OKLab	oklab(58.07% 0.0342 -0.2308)
OKLCH	oklch(58.07% 0.233 278.4)
XYZ	xyz(27.1269, 17.5815, 96.5524)
Luminance	0.1758 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CFF #F7FF5C

analogous

#5CA5FF #645CFF #B65CFF

triadic

#645CFF #FF645C #5CFF64

tetradic

#645CFF #FF5CA5 #F7FF5C #5CFFB6

square

#645CFF #FF5CA5 #F7FF5C #5CFFB6

split-complementary

#645CFF #FFB65C #A5FF5C

monochromatic

#0B00E1 #2A1FFF #645CFF #9E99FF #D8D6FF

Accessibility & contrast

On white

4.65

#645CFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#645CFF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #645CFF

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CFF	#FFFFFF	#000000	##FFFFFF
##645CFF	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007BFF

Deuteranopia (green-blind)

#006EFC

Tritanopia (blue-blind)

#0086A5

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #645cff;
/* rgb */ color: rgb(100, 92, 255);
/* oklch */ color: oklch(58.1% 0.233 278.4);

Tailwind

colors: {
  custom: {
    50: '#9f8bff',
    500: '#645cff',
    950: '#000000',
  },
}

SCSS

$custom: #645cff;
$custom-light: #9f8bff;
$custom-dark: #000000;

JSON

{
  "hex": "#645cff",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 255
  },
  "hsl": {
    "h": 242.945,
    "s": 100,
    "l": 68.039
  },
  "oklch": {
    "l": 0.58067,
    "c": 0.2333,
    "h": 278.4
  },
  "luminance": 0.17584
}

Semantic roles & 50–950 ramp

primary

#645CFF

secondary

#F2F4C2

accent

#E600DA

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645CFF

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

Preview Lab → · Contrast checker → · Palette generator →