#645FF4#645FF4

#645FF4 is a mid, highly saturated blue. Relative luminance 0.174; OKLCH L 57.7% C 0.216 H 278.7°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#645FF4
RGB	rgb(100, 95, 244)
HSL	hsl(242, 87%, 66%)
HSV	hsv(242, 61%, 96%)
CMYK	cmyk(59%, 61.1%, 0%, 4.3%)
CIE-LAB	lab(48.79, 43.94, -74.29)
CIE-LCH	lch(48.79, 86.31, 300.60°)
OKLab	oklab(57.66% 0.0326 -0.2137)
OKLCH	oklch(57.66% 0.216 278.7)
XYZ	xyz(25.6717, 17.4235, 87.5807)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FF4 #EFF45F

analogous

#5FA5F4 #645FF4 #AE5FF4

triadic

#645FF4 #F4645F #5FF464

tetradic

#645FF4 #F45FA5 #EFF45F #5FF4AE

square

#645FF4 #F45FA5 #EFF45F #5FF4AE

split-complementary

#645FF4 #F4AE5F #A5F45F

monochromatic

#140ECB #2D26F0 #645FF4 #9B98F8 #D3D2FC

Accessibility & contrast

On white

4.68

#645FF4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#645FF4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FF4

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FF4	#FFFFFF	#000000	##FFFFFF
##645FF4	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AF9

Deuteranopia (green-blind)

#006EF1

Tritanopia (blue-blind)

#0084A1

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #645ff4;
/* rgb */ color: rgb(100, 95, 244);
/* oklch */ color: oklch(57.7% 0.216 278.7);

Tailwind

colors: {
  custom: {
    50: '#9d8df9',
    500: '#645ff4',
    950: '#000000',
  },
}

SCSS

$custom: #645ff4;
$custom-light: #9d8df9;
$custom-dark: #000000;

JSON

{
  "hex": "#645ff4",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 244
  },
  "hsl": {
    "h": 242.013,
    "s": 87.135,
    "l": 66.471
  },
  "oklch": {
    "l": 0.5766,
    "c": 0.21617,
    "h": 278.7
  },
  "luminance": 0.17425
}

Semantic roles & 50–950 ramp

primary

#645FF4

secondary

#EEF0BF

accent

#E402DC

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645FF4

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

Preview Lab → · Contrast checker → · Palette generator →