#645B8A#645B8A

#645B8A is a mid, moderate violet. Relative luminance 0.120; OKLCH L 49.9% C 0.074 H 292.3°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#645B8A
RGB	rgb(100, 91, 138)
HSL	hsl(251, 21%, 45%)
HSV	hsv(251, 34%, 54%)
CMYK	cmyk(27.5%, 34.1%, 0%, 45.9%)
CIE-LAB	lab(41.26, 14.61, -24.79)
CIE-LCH	lch(41.26, 28.78, 300.51°)
OKLab	oklab(49.93% 0.0282 -0.0688)
OKLCH	oklch(49.93% 0.074 292.3)
XYZ	xyz(13.5829, 12.0263, 25.6455)
Luminance	0.1203 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B8A #818A5B

analogous

#5B6A8A #645B8A #7B5B8A

triadic

#645B8A #8A645B #5B8A64

tetradic

#645B8A #8A5B6A #818A5B #5B8A7B

square

#645B8A #8A5B6A #818A5B #5B8A7B

split-complementary

#645B8A #8A7B5B #6A8A5B

monochromatic

#2F2A40 #494365 #645B8A #837BA8 #A69FC0

Accessibility & contrast

On white

6.17

#645B8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#645B8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B8A

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B8A	#FFFFFF	#000000	##FFFFFF
##645B8A	1.00	6.17	3.41	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F628C

Deuteranopia (green-blind)

#4F6089

Tritanopia (blue-blind)

#5C636C

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #645b8a;
/* rgb */ color: rgb(100, 91, 138);
/* oklch */ color: oklch(49.9% 0.074 292.3);

Tailwind

colors: {
  custom: {
    50: '#9189ac',
    500: '#645b8a',
    950: '#000000',
  },
}

SCSS

$custom: #645b8a;
$custom-light: #9189ac;
$custom-dark: #000000;

JSON

{
  "hex": "#645b8a",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 138
  },
  "hsl": {
    "h": 251.489,
    "s": 20.524,
    "l": 44.902
  },
  "oklch": {
    "l": 0.49926,
    "c": 0.07437,
    "h": 292.3
  },
  "luminance": 0.12026
}

Semantic roles & 50–950 ramp

primary

#645B8A

secondary

#A9AE93

accent

#BD6BAD

background

#F9F8FA

surface

#F1F0F4

border

#CBCBCE

text

#0D0B10

muted

#7E7C7F

Preview Lab

Preview with #645B8A

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

Preview Lab → · Contrast checker → · Palette generator →