#645CF4#645CF4

#645CF4 is a mid, highly saturated blue. Relative luminance 0.169; OKLCH L 57.2% C 0.220 H 279.2°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#645CF4
RGB	rgb(100, 92, 244)
HSL	hsl(243, 87%, 66%)
HSV	hsv(243, 62%, 96%)
CMYK	cmyk(59%, 62.3%, 0%, 4.3%)
CIE-LAB	lab(48.13, 45.68, -75.38)
CIE-LCH	lch(48.13, 88.14, 301.22°)
OKLab	oklab(57.17% 0.0352 -0.2169)
OKLCH	oklch(57.17% 0.22 279.2)
XYZ	xyz(25.4066, 16.8934, 87.4923)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CF4 #ECF45C

analogous

#5CA0F4 #645CF4 #B05CF4

triadic

#645CF4 #F4645C #5CF464

tetradic

#645CF4 #F45CA0 #ECF45C #5CF4B0

square

#645CF4 #F45CA0 #ECF45C #5CF4B0

split-complementary

#645CF4 #F4B05C #A0F45C

monochromatic

#170EC8 #2D23F0 #645CF4 #9B95F8 #D1CFFC

Accessibility & contrast

On white

4.80

#645CF4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#645CF4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CF4

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CF4	#FFFFFF	#000000	##FFFFFF
##645CF4	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078F9

Deuteranopia (green-blind)

#006CF1

Tritanopia (blue-blind)

#0082A0

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #645cf4;
/* rgb */ color: rgb(100, 92, 244);
/* oklch */ color: oklch(57.2% 0.220 279.2);

Tailwind

colors: {
  custom: {
    50: '#9d8bf9',
    500: '#645cf4',
    950: '#000000',
  },
}

SCSS

$custom: #645cf4;
$custom-light: #9d8bf9;
$custom-dark: #000000;

JSON

{
  "hex": "#645cf4",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 244
  },
  "hsl": {
    "h": 243.158,
    "s": 87.356,
    "l": 65.882
  },
  "oklch": {
    "l": 0.57174,
    "c": 0.21972,
    "h": 279.2
  },
  "luminance": 0.16895
}

Semantic roles & 50–950 ramp

primary

#645CF4

secondary

#ECEFBD

accent

#E402D8

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645CF4

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

Preview Lab → · Contrast checker → · Palette generator →