#645CBD#645CBD

#645CBD is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.1% C 0.147 H 283.9°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#645CBD
RGB	rgb(100, 92, 189)
HSL	hsl(245, 42%, 55%)
HSV	hsv(245, 51%, 74%)
CMYK	cmyk(47.1%, 51.3%, 0%, 25.9%)
CIE-LAB	lab(44.29, 28.68, -50.24)
CIE-LCH	lch(44.29, 57.85, 299.72°)
OKLab	oklab(53.12% 0.0354 -0.143)
OKLCH	oklch(53.12% 0.147 283.9)
XYZ	xyz(18.2653, 14.0369, 49.8812)
Luminance	0.1404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CBD #B5BD5C

analogous

#5C85BD #645CBD #945CBD

triadic

#645CBD #BD645C #5CBD64

tetradic

#645CBD #BD5C85 #B5BD5C #5CBD94

square

#645CBD #BD5C85 #B5BD5C #5CBD94

split-complementary

#645CBD #BD945C #85BD5C

monochromatic

#332E71 #473F9C #645CBD #8D88CF #B7B3E0

Accessibility & contrast

On white

5.52

#645CBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#645CBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CBD

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CBD	#FFFFFF	#000000	##FFFFFF
##645CBD	1.00	5.52	3.81	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E6CC0

Deuteranopia (green-blind)

#2A66BB

Tritanopia (blue-blind)

#467184

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645cbd;
/* rgb */ color: rgb(100, 92, 189);
/* oklch */ color: oklch(53.1% 0.147 283.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#645cbd",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 189
  },
  "hsl": {
    "h": 244.948,
    "s": 42.358,
    "l": 55.098
  },
  "oklch": {
    "l": 0.53121,
    "c": 0.14729,
    "h": 283.9
  },
  "luminance": 0.14038
}

Semantic roles & 50–950 ramp

primary

#645CBD

secondary

#CBCFA6

accent

#D256C8

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #645CBD

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

Preview Lab → · Contrast checker → · Palette generator →