#645EF9#645EF9

#645EF9 is a mid, highly saturated blue. Relative luminance 0.176; OKLCH L 57.9% C 0.224 H 278.5°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#645EF9
RGB	rgb(100, 94, 249)
HSL	hsl(242, 93%, 67%)
HSV	hsv(242, 62%, 98%)
CMYK	cmyk(59.8%, 62.2%, 0%, 2.4%)
CIE-LAB	lab(48.95, 46.08, -76.83)
CIE-LCH	lch(48.95, 89.59, 300.96°)
OKLab	oklab(57.9% 0.0331 -0.2211)
OKLCH	oklch(57.9% 0.224 278.5)
XYZ	xyz(26.3516, 17.5523, 91.6035)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EF9 #F3F95E

analogous

#5EA5F9 #645EF9 #B25EF9

triadic

#645EF9 #F9645E #5EF964

tetradic

#645EF9 #F95EA5 #F3F95E #5EF9B2

square

#645EF9 #F95EA5 #F3F95E #5EF9B2

split-complementary

#645EF9 #F9B25E #A5F95E

monochromatic

#1008D5 #2B23F7 #645EF9 #9D99FB #D6D4FD

Accessibility & contrast

On white

4.66

#645EF9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#645EF9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #645EF9

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EF9	#FFFFFF	#000000	##FFFFFF
##645EF9	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007BFE

Deuteranopia (green-blind)

#006EF6

Tritanopia (blue-blind)

#0085A3

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #645ef9;
/* rgb */ color: rgb(100, 94, 249);
/* oklch */ color: oklch(57.9% 0.224 278.5);

Tailwind

colors: {
  custom: {
    50: '#9e8cfc',
    500: '#645ef9',
    950: '#000000',
  },
}

SCSS

$custom: #645ef9;
$custom-light: #9e8cfc;
$custom-dark: #000000;

JSON

{
  "hex": "#645ef9",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 249
  },
  "hsl": {
    "h": 242.323,
    "s": 92.814,
    "l": 67.255
  },
  "oklch": {
    "l": 0.57895,
    "c": 0.2236,
    "h": 278.5
  },
  "luminance": 0.17554
}

Semantic roles & 50–950 ramp

primary

#645EF9

secondary

#F0F2C1

accent

#E600DD

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645EF9

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

Preview Lab → · Contrast checker → · Palette generator →