#645CBC#645CBC

#645CBC is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.1% C 0.146 H 284.0°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#645CBC
RGB	rgb(100, 92, 188)
HSL	hsl(245, 42%, 55%)
HSV	hsv(245, 51%, 74%)
CMYK	cmyk(46.8%, 51.1%, 0%, 26.3%)
CIE-LAB	lab(44.22, 28.38, -49.75)
CIE-LCH	lch(44.22, 57.28, 299.70°)
OKLab	oklab(53.06% 0.0354 -0.1416)
OKLCH	oklch(53.06% 0.146 284)
XYZ	xyz(18.1571, 13.9936, 49.3115)
Luminance	0.1399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CBC #B4BC5C

analogous

#5C84BC #645CBC #945CBC

triadic

#645CBC #BC645C #5CBC64

tetradic

#645CBC #BC5C84 #B4BC5C #5CBC94

square

#645CBC #BC5C84 #B4BC5C #5CBC94

split-complementary

#645CBC #BC945C #84BC5C

monochromatic

#332E70 #47409B #645CBC #8D87CE #B6B3E0

Accessibility & contrast

On white

5.53

#645CBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#645CBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CBC

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CBC	#FFFFFF	#000000	##FFFFFF
##645CBC	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306CBF

Deuteranopia (green-blind)

#2B66BA

Tritanopia (blue-blind)

#467183

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645cbc;
/* rgb */ color: rgb(100, 92, 188);
/* oklch */ color: oklch(53.1% 0.146 284.0);

Tailwind

colors: {
  custom: {
    50: '#968ad1',
    500: '#645cbc',
    950: '#000000',
  },
}

SCSS

$custom: #645cbc;
$custom-light: #968ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#645cbc",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 188
  },
  "hsl": {
    "h": 245,
    "s": 41.739,
    "l": 54.902
  },
  "oklch": {
    "l": 0.53055,
    "c": 0.14591,
    "h": 284
  },
  "luminance": 0.13994
}

Semantic roles & 50–950 ramp

primary

#645CBC

secondary

#CBCEA6

accent

#D256C7

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #645CBC

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

Preview Lab → · Contrast checker → · Palette generator →