#645D8A#645D8A

#645D8A is a mid, moderate blue. Relative luminance 0.124; OKLCH L 50.3% C 0.071 H 290.7°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#645D8A
RGB	rgb(100, 93, 138)
HSL	hsl(249, 19%, 45%)
HSV	hsv(249, 33%, 54%)
CMYK	cmyk(27.5%, 32.6%, 0%, 45.9%)
CIE-LAB	lab(41.80, 13.37, -23.95)
CIE-LCH	lch(41.80, 27.42, 299.17°)
OKLab	oklab(50.35% 0.0252 -0.0664)
OKLCH	oklch(50.35% 0.071 290.7)
XYZ	xyz(13.7562, 12.3728, 25.7033)
Luminance	0.1237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D8A #838A5D

analogous

#5D6C8A #645D8A #7A5D8A

triadic

#645D8A #8A645D #5D8A64

tetradic

#645D8A #8A5D6C #838A5D #5D8A7A

square

#645D8A #8A5D6C #838A5D #5D8A7A

split-complementary

#645D8A #8A7A5D #6C8A5D

monochromatic

#2F2C41 #4A4465 #645D8A #837DA7 #A6A1C0

Accessibility & contrast

On white

6.04

#645D8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#645D8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D8A

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D8A	#FFFFFF	#000000	##FFFFFF
##645D8A	1.00	6.04	3.47	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51638C

Deuteranopia (green-blind)

#516289

Tritanopia (blue-blind)

#5C656D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #645d8a;
/* rgb */ color: rgb(100, 93, 138);
/* oklch */ color: oklch(50.3% 0.071 290.7);

Tailwind

colors: {
  custom: {
    50: '#918aac',
    500: '#645d8a',
    950: '#000000',
  },
}

SCSS

$custom: #645d8a;
$custom-light: #918aac;
$custom-dark: #000000;

JSON

{
  "hex": "#645d8a",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 138
  },
  "hsl": {
    "h": 249.333,
    "s": 19.481,
    "l": 45.294
  },
  "oklch": {
    "l": 0.50345,
    "c": 0.07099,
    "h": 290.7
  },
  "luminance": 0.12373
}

Semantic roles & 50–950 ramp

primary

#645D8A

secondary

#AAAE95

accent

#BC6CB0

background

#F8F8FA

surface

#F0F0F4

border

#CBCBCE

text

#0D0B10

muted

#7D7C7F

Preview Lab

Preview with #645D8A

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

Preview Lab → · Contrast checker → · Palette generator →