#645CBE#645CBE

#645CBE is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.2% C 0.149 H 283.8°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#645CBE
RGB	rgb(100, 92, 190)
HSL	hsl(245, 43%, 55%)
HSV	hsv(245, 52%, 75%)
CMYK	cmyk(47.4%, 51.6%, 0%, 25.5%)
CIE-LAB	lab(44.35, 28.99, -50.72)
CIE-LCH	lch(44.35, 58.42, 299.75°)
OKLab	oklab(53.19% 0.0355 -0.1444)
OKLCH	oklch(53.19% 0.149 283.8)
XYZ	xyz(18.3742, 14.0805, 50.4549)
Luminance	0.1408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CBE #B6BE5C

analogous

#5C85BE #645CBE #955CBE

triadic

#645CBE #BE645C #5CBE64

tetradic

#645CBE #BE5C85 #B6BE5C #5CBE95

square

#645CBE #BE5C85 #B6BE5C #5CBE95

split-complementary

#645CBE #BE955C #85BE5C

monochromatic

#332E72 #473F9E #645CBE #8E88CF #B7B4E1

Accessibility & contrast

On white

5.50

#645CBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#645CBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CBE

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CBE	#FFFFFF	#000000	##FFFFFF
##645CBE	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6CC1

Deuteranopia (green-blind)

#2866BC

Tritanopia (blue-blind)

#457184

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645cbe;
/* rgb */ color: rgb(100, 92, 190);
/* oklch */ color: oklch(53.2% 0.149 283.8);

Tailwind

colors: {
  custom: {
    50: '#968ad2',
    500: '#645cbe',
    950: '#000000',
  },
}

SCSS

$custom: #645cbe;
$custom-light: #968ad2;
$custom-dark: #000000;

JSON

{
  "hex": "#645cbe",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 190
  },
  "hsl": {
    "h": 244.898,
    "s": 42.982,
    "l": 55.294
  },
  "oklch": {
    "l": 0.53188,
    "c": 0.14869,
    "h": 283.8
  },
  "luminance": 0.14081
}

Semantic roles & 50–950 ramp

primary

#645CBE

secondary

#CCCFA6

accent

#D355C8

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #645CBE

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

Preview Lab → · Contrast checker → · Palette generator →