#645DBE#645DBE

#645DBE is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.4% C 0.147 H 283.5°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#645DBE
RGB	rgb(100, 93, 190)
HSL	hsl(244, 43%, 55%)
HSV	hsv(244, 51%, 75%)
CMYK	cmyk(47.4%, 51.1%, 0%, 25.5%)
CIE-LAB	lab(44.60, 28.37, -50.32)
CIE-LCH	lch(44.60, 57.77, 299.42°)
OKLab	oklab(53.37% 0.0343 -0.1432)
OKLCH	oklch(53.37% 0.147 283.5)
XYZ	xyz(18.4614, 14.2549, 50.4839)
Luminance	0.1426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DBE #B7BE5D

analogous

#5D86BE #645DBE #945DBE

triadic

#645DBE #BE645D #5DBE64

tetradic

#645DBE #BE5D86 #B7BE5D #5DBE94

square

#645DBE #BE5D86 #B7BE5D #5DBE94

split-complementary

#645DBE #BE945D #86BE5D

monochromatic

#332E73 #46409E #645DBE #8E89D0 #B8B4E1

Accessibility & contrast

On white

5.45

#645DBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#645DBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DBE

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DBE	#FFFFFF	#000000	##FFFFFF
##645DBE	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306DC1

Deuteranopia (green-blind)

#2A66BC

Tritanopia (blue-blind)

#457285

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645dbe;
/* rgb */ color: rgb(100, 93, 190);
/* oklch */ color: oklch(53.4% 0.147 283.5);

Tailwind

colors: {
  custom: {
    50: '#968bd2',
    500: '#645dbe',
    950: '#000000',
  },
}

SCSS

$custom: #645dbe;
$custom-light: #968bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#645dbe",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 190
  },
  "hsl": {
    "h": 244.33,
    "s": 42.731,
    "l": 55.49
  },
  "oklch": {
    "l": 0.53374,
    "c": 0.14726,
    "h": 283.5
  },
  "luminance": 0.14256
}

Semantic roles & 50–950 ramp

primary

#645DBE

secondary

#CDD0A7

accent

#D355C9

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C14

muted

#7E7D83

Preview Lab

Preview with #645DBE

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

Preview Lab → · Contrast checker → · Palette generator →