#645EF7#645EF7

#645EF7 is a mid, highly saturated blue. Relative luminance 0.174; OKLCH L 57.7% C 0.221 H 278.6°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#645EF7
RGB	rgb(100, 94, 247)
HSL	hsl(242, 91%, 67%)
HSV	hsv(242, 62%, 97%)
CMYK	cmyk(59.5%, 61.9%, 0%, 3.1%)
CIE-LAB	lab(48.80, 45.46, -75.96)
CIE-LCH	lch(48.80, 88.52, 300.90°)
OKLab	oklab(57.74% 0.0333 -0.2186)
OKLCH	oklch(57.74% 0.221 278.6)
XYZ	xyz(26.0414, 17.4282, 89.9693)
Luminance	0.1743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EF7 #F1F75E

analogous

#5EA5F7 #645EF7 #B15EF7

triadic

#645EF7 #F7645E #5EF764

tetradic

#645EF7 #F75EA5 #F1F75E #5EF7B1

square

#645EF7 #F75EA5 #F1F75E #5EF7B1

split-complementary

#645EF7 #F7B15E #A5F75E

monochromatic

#120AD0 #2C24F4 #645EF7 #9C98FA #D4D3FD

Accessibility & contrast

On white

4.68

#645EF7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#645EF7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EF7

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EF7	#FFFFFF	#000000	##FFFFFF
##645EF7	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AFC

Deuteranopia (green-blind)

#006EF4

Tritanopia (blue-blind)

#0084A2

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #645ef7;
/* rgb */ color: rgb(100, 94, 247);
/* oklch */ color: oklch(57.7% 0.221 278.6);

Tailwind

colors: {
  custom: {
    50: '#9e8cfb',
    500: '#645ef7',
    950: '#000000',
  },
}

SCSS

$custom: #645ef7;
$custom-light: #9e8cfb;
$custom-dark: #000000;

JSON

{
  "hex": "#645ef7",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 247
  },
  "hsl": {
    "h": 242.353,
    "s": 90.533,
    "l": 66.863
  },
  "oklch": {
    "l": 0.57735,
    "c": 0.22111,
    "h": 278.6
  },
  "luminance": 0.1743
}

Semantic roles & 50–950 ramp

primary

#645EF7

secondary

#EFF1C0

accent

#E600DC

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645EF7

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

Preview Lab → · Contrast checker → · Palette generator →