#645CF1#645CF1

#645CF1 is a mid, highly saturated blue. Relative luminance 0.167; OKLCH L 56.9% C 0.216 H 279.4°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#645CF1
RGB	rgb(100, 92, 241)
HSL	hsl(243, 84%, 65%)
HSV	hsv(243, 62%, 95%)
CMYK	cmyk(58.5%, 61.8%, 0%, 5.5%)
CIE-LAB	lab(47.90, 44.75, -74.07)
CIE-LCH	lch(47.90, 86.54, 301.14°)
OKLab	oklab(56.94% 0.0354 -0.2131)
OKLCH	oklch(56.94% 0.216 279.4)
XYZ	xyz(24.9548, 16.7127, 85.1129)
Luminance	0.1671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CF1 #E9F15C

analogous

#5C9FF1 #645CF1 #AE5CF1

triadic

#645CF1 #F1645C #5CF164

tetradic

#645CF1 #F15C9F #E9F15C #5CF1AE

square

#645CF1 #F15C9F #E9F15C #5CF1AE

split-complementary

#645CF1 #F1AE5C #9FF15C

monochromatic

#1A11C2 #2E24EC #645CF1 #9A94F6 #CFCDFB

Accessibility & contrast

On white

4.84

#645CF1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#645CF1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CF1

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CF1	#FFFFFF	#000000	##FFFFFF
##645CF1	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077F6

Deuteranopia (green-blind)

#006CEE

Tritanopia (blue-blind)

#00819E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #645cf1;
/* rgb */ color: rgb(100, 92, 241);
/* oklch */ color: oklch(56.9% 0.216 279.4);

Tailwind

colors: {
  custom: {
    50: '#9d8bf7',
    500: '#645cf1',
    950: '#000000',
  },
}

SCSS

$custom: #645cf1;
$custom-light: #9d8bf7;
$custom-dark: #000000;

JSON

{
  "hex": "#645cf1",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 241
  },
  "hsl": {
    "h": 243.221,
    "s": 84.181,
    "l": 65.294
  },
  "oklch": {
    "l": 0.56935,
    "c": 0.21597,
    "h": 279.4
  },
  "luminance": 0.16714
}

Semantic roles & 50–950 ramp

primary

#645CF1

secondary

#EBEEBB

accent

#E105D5

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #645CF1

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

Preview Lab → · Contrast checker → · Palette generator →