#645FFB#645FFB

#645FFB is a mid, highly saturated blue. Relative luminance 0.179; OKLCH L 58.2% C 0.225 H 278.2°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#645FFB
RGB	rgb(100, 95, 251)
HSL	hsl(242, 95%, 68%)
HSV	hsv(242, 62%, 98%)
CMYK	cmyk(60.2%, 62.2%, 0%, 1.6%)
CIE-LAB	lab(49.32, 46.13, -77.33)
CIE-LCH	lch(49.32, 90.04, 300.82°)
OKLab	oklab(58.22% 0.0321 -0.2226)
OKLCH	oklch(58.22% 0.225 278.2)
XYZ	xyz(26.7547, 17.8567, 93.2849)
Luminance	0.1786 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FFB #F6FB5F

analogous

#5FA8FB #645FFB #B25FFB

triadic

#645FFB #FB645F #5FFB64

tetradic

#645FFB #FB5FA8 #F6FB5F #5FFBB2

square

#645FFB #FB5FA8 #F6FB5F #5FFBB2

split-complementary

#645FFB #FBB25F #A8FB5F

monochromatic

#0C05DA #2A23FA #645FFB #9E9BFC #D8D6FE

Accessibility & contrast

On white

4.59

#645FFB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#645FFB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #645FFB

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FFB	#FFFFFF	#000000	##FFFFFF
##645FFB	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CFF

Deuteranopia (green-blind)

#006FF8

Tritanopia (blue-blind)

#0086A4

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #645ffb;
/* rgb */ color: rgb(100, 95, 251);
/* oklch */ color: oklch(58.2% 0.225 278.2);

Tailwind

colors: {
  custom: {
    50: '#9e8dfe',
    500: '#645ffb',
    950: '#000000',
  },
}

SCSS

$custom: #645ffb;
$custom-light: #9e8dfe;
$custom-dark: #000000;

JSON

{
  "hex": "#645ffb",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 251
  },
  "hsl": {
    "h": 241.923,
    "s": 95.122,
    "l": 67.843
  },
  "oklch": {
    "l": 0.58216,
    "c": 0.22492,
    "h": 278.2
  },
  "luminance": 0.17859
}

Semantic roles & 50–950 ramp

primary

#645FFB

secondary

#F1F3C3

accent

#E600DE

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645FFB

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

Preview Lab → · Contrast checker → · Palette generator →