#645FDB#645FDB

#645FDB is a mid, vivid blue. Relative luminance 0.160; OKLCH L 55.8% C 0.184 H 280.4°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#645FDB
RGB	rgb(100, 95, 219)
HSL	hsl(242, 63%, 62%)
HSV	hsv(242, 57%, 86%)
CMYK	cmyk(54.3%, 56.6%, 0%, 14.1%)
CIE-LAB	lab(46.98, 36.12, -63.14)
CIE-LCH	lch(46.98, 72.74, 299.77°)
OKLab	oklab(55.76% 0.0333 -0.1809)
OKLCH	oklch(55.76% 0.184 280.4)
XYZ	xyz(22.1299, 16.0068, 68.9276)
Luminance	0.1601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FDB #D6DB5F

analogous

#5F98DB #645FDB #A25FDB

triadic

#645FDB #DB645F #5FDB64

tetradic

#645FDB #DB5F98 #D6DB5F #5FDBA2

square

#645FDB #DB5F98 #D6DB5F #5FDBA2

split-complementary

#645FDB #DBA25F #98DB5F

monochromatic

#28239C #352ECE #645FDB #9491E6 #C5C3F1

Accessibility & contrast

On white

5.00

#645FDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#645FDB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FDB

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FDB	#FFFFFF	#000000	##FFFFFF
##645FDB	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074DF

Deuteranopia (green-blind)

#006BD8

Tritanopia (blue-blind)

#2B7C94

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645fdb;
/* rgb */ color: rgb(100, 95, 219);
/* oklch */ color: oklch(55.8% 0.184 280.4);

Tailwind

colors: {
  custom: {
    50: '#998ce7',
    500: '#645fdb',
    950: '#000000',
  },
}

SCSS

$custom: #645fdb;
$custom-light: #998ce7;
$custom-dark: #000000;

JSON

{
  "hex": "#645fdb",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 219
  },
  "hsl": {
    "h": 242.419,
    "s": 63.265,
    "l": 61.569
  },
  "oklch": {
    "l": 0.5576,
    "c": 0.18392,
    "h": 280.4
  },
  "luminance": 0.16008
}

Semantic roles & 50–950 ramp

primary

#645FDB

secondary

#E0E2B4

accent

#CB1AC4

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645FDB

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

Preview Lab → · Contrast checker → · Palette generator →