#645DB2#645DB2

#645DB2 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.6% C 0.130 H 284.7°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#645DB2
RGB	rgb(100, 93, 178)
HSL	hsl(245, 36%, 53%)
HSV	hsv(245, 48%, 70%)
CMYK	cmyk(43.8%, 47.8%, 0%, 30.2%)
CIE-LAB	lab(43.87, 24.75, -44.47)
CIE-LCH	lch(43.87, 50.90, 299.10°)
OKLab	oklab(52.6% 0.0331 -0.126)
OKLCH	oklch(52.6% 0.13 284.7)
XYZ	xyz(17.2034, 13.7517, 43.8587)
Luminance	0.1375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DB2 #ABB25D

analogous

#5D80B2 #645DB2 #8E5DB2

triadic

#645DB2 #B2645D #5DB264

tetradic

#645DB2 #B25D80 #ABB25D #5DB28E

square

#645DB2 #B25D80 #ABB25D #5DB28E

split-complementary

#645DB2 #B28E5D #80B25D

monochromatic

#343065 #4A448E #645DB2 #8C86C6 #B3B0D9

Accessibility & contrast

On white

5.60

#645DB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#645DB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DB2

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DB2	#FFFFFF	#000000	##FFFFFF
##645DB2	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6AB5

Deuteranopia (green-blind)

#3865B0

Tritanopia (blue-blind)

#4C6F7F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #645db2;
/* rgb */ color: rgb(100, 93, 178);
/* oklch */ color: oklch(52.6% 0.130 284.7);

Tailwind

colors: {
  custom: {
    50: '#948bc9',
    500: '#645db2',
    950: '#000000',
  },
}

SCSS

$custom: #645db2;
$custom-light: #948bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#645db2",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 178
  },
  "hsl": {
    "h": 244.941,
    "s": 35.565,
    "l": 53.137
  },
  "oklch": {
    "l": 0.52598,
    "c": 0.13033,
    "h": 284.7
  },
  "luminance": 0.13752
}

Semantic roles & 50–950 ramp

primary

#645DB2

secondary

#C5C8A3

accent

#CC5CC2

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #645DB2

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

Preview Lab → · Contrast checker → · Palette generator →