#645A9C#645A9C

#645A9C is a mid, moderate blue. Relative luminance 0.124; OKLCH L 50.7% C 0.103 H 289.1°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#645A9C
RGB	rgb(100, 90, 156)
HSL	hsl(249, 27%, 48%)
HSV	hsv(249, 42%, 61%)
CMYK	cmyk(35.9%, 42.3%, 0%, 38.8%)
CIE-LAB	lab(41.88, 20.19, -34.63)
CIE-LCH	lch(41.88, 40.09, 300.24°)
OKLab	oklab(50.69% 0.0338 -0.0973)
OKLCH	oklch(50.69% 0.103 289.1)
XYZ	xyz(14.9108, 12.4216, 33.0580)
Luminance	0.1242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A9C #929C5A

analogous

#5A719C #645A9C #855A9C

triadic

#645A9C #9C645A #5A9C64

tetradic

#645A9C #9C5A71 #929C5A #5A9C85

square

#645A9C #9C5A71 #929C5A #5A9C85

split-complementary

#645A9C #9C855A #719C5A

monochromatic

#322D4E #4B4475 #645A9C #877EB5 #ABA5CB

Accessibility & contrast

On white

6.03

#645A9C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#645A9C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A9C

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A9C	#FFFFFF	#000000	##FFFFFF
##645A9C	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#45649F

Deuteranopia (green-blind)

#45619A

Tritanopia (blue-blind)

#566673

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #645a9c;
/* rgb */ color: rgb(100, 90, 156);
/* oklch */ color: oklch(50.7% 0.103 289.1);

Tailwind

colors: {
  custom: {
    50: '#9288b9',
    500: '#645a9c',
    950: '#000000',
  },
}

SCSS

$custom: #645a9c;
$custom-light: #9288b9;
$custom-dark: #000000;

JSON

{
  "hex": "#645a9c",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 156
  },
  "hsl": {
    "h": 249.091,
    "s": 26.829,
    "l": 48.235
  },
  "oklch": {
    "l": 0.50691,
    "c": 0.10298,
    "h": 289.1
  },
  "luminance": 0.12422
}

Semantic roles & 50–950 ramp

primary

#645A9C

secondary

#B4B999

accent

#C365B5

background

#F9F8FB

surface

#F1F0F6

border

#CBCBD0

text

#0D0B11

muted

#7E7C80

Preview Lab

Preview with #645A9C

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

Preview Lab → · Contrast checker → · Palette generator →