#645EF5#645EF5

#645EF5 is a mid, highly saturated blue. Relative luminance 0.173; OKLCH L 57.6% C 0.219 H 278.8°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#645EF5
RGB	rgb(100, 94, 245)
HSL	hsl(242, 88%, 66%)
HSV	hsv(242, 62%, 96%)
CMYK	cmyk(59.2%, 61.6%, 0%, 3.9%)
CIE-LAB	lab(48.64, 44.83, -75.09)
CIE-LCH	lch(48.64, 87.46, 300.84°)
OKLab	oklab(57.58% 0.0334 -0.216)
OKLCH	oklch(57.58% 0.219 278.8)
XYZ	xyz(25.7344, 17.3054, 88.3527)
Luminance	0.1731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EF5 #EFF55E

analogous

#5EA4F5 #645EF5 #B05EF5

triadic

#645EF5 #F5645E #5EF564

tetradic

#645EF5 #F55EA4 #EFF55E #5EF5B0

square

#645EF5 #F55EA4 #EFF55E #5EF5B0

split-complementary

#645EF5 #F5B05E #A4F55E

monochromatic

#140DCC #2D24F1 #645EF5 #9B98F9 #D3D1FC

Accessibility & contrast

On white

4.71

#645EF5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#645EF5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EF5

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EF5	#FFFFFF	#000000	##FFFFFF
##645EF5	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AFA

Deuteranopia (green-blind)

#006DF2

Tritanopia (blue-blind)

#0084A1

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #645ef5;
/* rgb */ color: rgb(100, 94, 245);
/* oklch */ color: oklch(57.6% 0.219 278.8);

Tailwind

colors: {
  custom: {
    50: '#9d8cf9',
    500: '#645ef5',
    950: '#000000',
  },
}

SCSS

$custom: #645ef5;
$custom-light: #9d8cf9;
$custom-dark: #000000;

JSON

{
  "hex": "#645ef5",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 245
  },
  "hsl": {
    "h": 242.384,
    "s": 88.304,
    "l": 66.471
  },
  "oklch": {
    "l": 0.57576,
    "c": 0.21861,
    "h": 278.8
  },
  "luminance": 0.17307
}

Semantic roles & 50–950 ramp

primary

#645EF5

secondary

#EEF0BF

accent

#E501DC

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645EF5

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

Preview Lab → · Contrast checker → · Palette generator →