#645AFD#645AFD

#645AFD is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.6% C 0.233 H 278.9°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#645AFD
RGB	rgb(100, 90, 253)
HSL	hsl(244, 98%, 67%)
HSV	hsv(244, 64%, 99%)
CMYK	cmyk(60.5%, 64.4%, 0%, 0.8%)
CIE-LAB	lab(48.40, 49.61, -79.95)
CIE-LCH	lch(48.40, 94.09, 301.82°)
OKLab	oklab(57.59% 0.036 -0.2303)
OKLCH	oklch(57.59% 0.233 278.9)
XYZ	xyz(26.6357, 17.1115, 94.8087)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AFD #F3FD5A

analogous

#5AA2FD #645AFD #B65AFD

triadic

#645AFD #FD645A #5AFD64

tetradic

#645AFD #FD5AA2 #F3FD5A #5AFDB6

square

#645AFD #FD5AA2 #F3FD5A #5AFDB6

split-complementary

#645AFD #FDB65A #A2FD5A

monochromatic

#1003DA #2B1EFC #645AFD #9D96FE #D6D3FE

Accessibility & contrast

On white

4.75

#645AFD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#645AFD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AFD

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AFD	#FFFFFF	#000000	##FFFFFF
##645AFD	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079FF

Deuteranopia (green-blind)

#006CFA

Tritanopia (blue-blind)

#0084A4

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #645afd;
/* rgb */ color: rgb(100, 90, 253);
/* oklch */ color: oklch(57.6% 0.233 278.9);

Tailwind

colors: {
  custom: {
    50: '#9f8aff',
    500: '#645afd',
    950: '#000000',
  },
}

SCSS

$custom: #645afd;
$custom-light: #9f8aff;
$custom-dark: #000000;

JSON

{
  "hex": "#645afd",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 253
  },
  "hsl": {
    "h": 243.681,
    "s": 97.605,
    "l": 67.255
  },
  "oklch": {
    "l": 0.57593,
    "c": 0.23311,
    "h": 278.9
  },
  "luminance": 0.17114
}

Semantic roles & 50–950 ramp

primary

#645AFD

secondary

#F0F3C0

accent

#E600D7

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645AFD

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

Preview Lab → · Contrast checker → · Palette generator →