#645FCA#645FCA

#645FCA is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.6% C 0.161 H 281.7°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#645FCA
RGB	rgb(100, 95, 202)
HSL	hsl(243, 50%, 58%)
HSV	hsv(243, 53%, 79%)
CMYK	cmyk(50.5%, 53%, 0%, 20.8%)
CIE-LAB	lab(45.85, 30.83, -55.25)
CIE-LCH	lch(45.85, 63.27, 299.17°)
OKLab	oklab(54.55% 0.0328 -0.1577)
OKLCH	oklch(54.55% 0.161 281.7)
XYZ	xyz(20.0052, 15.1569, 57.7371)
Luminance	0.1516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FCA #C5CA5F

analogous

#5F8FCA #645FCA #995FCA

triadic

#645FCA #CA645F #5FCA64

tetradic

#645FCA #CA5F8F #C5CA5F #5FCA99

square

#645FCA #CA5F8F #C5CA5F #5FCA99

split-complementary

#645FCA #CA995F #8FCA5F

monochromatic

#302B83 #403BB1 #645FCA #918DD9 #BDBBE8

Accessibility & contrast

On white

5.21

#645FCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#645FCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FCA

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FCA	#FFFFFF	#000000	##FFFFFF
##645FCA	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2570CE

Deuteranopia (green-blind)

#1B69C8

Tritanopia (blue-blind)

#3C778B

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645fca;
/* rgb */ color: rgb(100, 95, 202);
/* oklch */ color: oklch(54.6% 0.161 281.7);

Tailwind

colors: {
  custom: {
    50: '#978cdb',
    500: '#645fca',
    950: '#000000',
  },
}

SCSS

$custom: #645fca;
$custom-light: #978cdb;
$custom-dark: #000000;

JSON

{
  "hex": "#645fca",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 202
  },
  "hsl": {
    "h": 242.804,
    "s": 50.235,
    "l": 58.235
  },
  "oklch": {
    "l": 0.54554,
    "c": 0.16105,
    "h": 281.7
  },
  "luminance": 0.15158
}

Semantic roles & 50–950 ramp

primary

#645FCA

secondary

#D6D8AD

accent

#DA4ED3

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645FCA

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

Preview Lab → · Contrast checker → · Palette generator →