#645A99#645A99

#645A99 is a mid, moderate blue. Relative luminance 0.123; OKLCH L 50.5% C 0.099 H 289.7°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#645A99
RGB	rgb(100, 90, 153)
HSL	hsl(250, 26%, 48%)
HSV	hsv(250, 41%, 60%)
CMYK	cmyk(34.6%, 41.2%, 0%, 40%)
CIE-LAB	lab(41.72, 19.34, -33.09)
CIE-LCH	lch(41.72, 38.32, 300.31°)
OKLab	oklab(50.52% 0.0332 -0.0928)
OKLCH	oklch(50.52% 0.099 289.7)
XYZ	xyz(14.6599, 12.3212, 31.7367)
Luminance	0.1232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A99 #8F995A

analogous

#5A6F99 #645A99 #845A99

triadic

#645A99 #99645A #5A9964

tetradic

#645A99 #995A6F #8F995A #5A9984

square

#645A99 #995A6F #8F995A #5A9984

split-complementary

#645A99 #99845A #6F995A

monochromatic

#322D4C #4B4372 #645A99 #867DB3 #AAA4C9

Accessibility & contrast

On white

6.06

#645A99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#645A99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A99

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A99	#FFFFFF	#000000	##FFFFFF
##645A99	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46649B

Deuteranopia (green-blind)

#476197

Tritanopia (blue-blind)

#576672

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #645a99;
/* rgb */ color: rgb(100, 90, 153);
/* oklch */ color: oklch(50.5% 0.099 289.7);

Tailwind

colors: {
  custom: {
    50: '#9288b7',
    500: '#645a99',
    950: '#000000',
  },
}

SCSS

$custom: #645a99;
$custom-light: #9288b7;
$custom-dark: #000000;

JSON

{
  "hex": "#645a99",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 153
  },
  "hsl": {
    "h": 249.524,
    "s": 25.926,
    "l": 47.647
  },
  "oklch": {
    "l": 0.50521,
    "c": 0.09854,
    "h": 289.7
  },
  "luminance": 0.12322
}

Semantic roles & 50–950 ramp

primary

#645A99

secondary

#B2B798

accent

#C265B4

background

#F9F8FB

surface

#F1F0F6

border

#CBCBD0

text

#0D0B11

muted

#7E7C80

Preview Lab

Preview with #645A99

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

Preview Lab → · Contrast checker → · Palette generator →