#645C72#645C72

#645C72 is a mid, muted violet. Relative luminance 0.116; OKLCH L 49.0% C 0.036 H 301.7°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#645C72
RGB	rgb(100, 92, 114)
HSL	hsl(262, 11%, 40%)
HSV	hsv(262, 19%, 45%)
CMYK	cmyk(12.3%, 19.3%, 0%, 55.3%)
CIE-LAB	lab(40.54, 7.96, -11.29)
CIE-LCH	lch(40.54, 13.81, 305.20°)
OKLab	oklab(49.04% 0.0189 -0.0306)
OKLCH	oklch(49.04% 0.036 301.7)
XYZ	xyz(12.1194, 11.5785, 17.5127)
Luminance	0.1158 (WCAG relative)
Temperature	neutral
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C72 #6A725C

analogous

#5C5F72 #645C72 #6F5C72

triadic

#645C72 #72645C #5C7264

tetradic

#645C72 #725C5F #6A725C #5C726F

square

#645C72 #725C5F #6A725C #5C726F

split-complementary

#645C72 #726F5C #5F725C

monochromatic

#29252E #464150 #645C72 #827993 #A29BAE

Accessibility & contrast

On white

6.33

#645C72 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#645C72 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C72

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C72	#FFFFFF	#000000	##FFFFFF
##645C72	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585F73

Deuteranopia (green-blind)

#595F71

Tritanopia (blue-blind)

#625F63

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #645c72;
/* rgb */ color: rgb(100, 92, 114);
/* oklch */ color: oklch(49.0% 0.036 301.7);

Tailwind

colors: {
  custom: {
    50: '#908a9a',
    500: '#645c72',
    950: '#000000',
  },
}

SCSS

$custom: #645c72;
$custom-light: #908a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#645c72",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 114
  },
  "hsl": {
    "h": 261.818,
    "s": 10.68,
    "l": 40.392
  },
  "oklch": {
    "l": 0.49042,
    "c": 0.03596,
    "h": 301.7
  },
  "luminance": 0.11579
}

Semantic roles & 50–950 ramp

primary

#645C72

secondary

#979D8D

accent

#B4749D

background

#F8F8F9

surface

#F0F0F2

border

#CBCBCC

text

#0C0B0E

muted

#7D7C7E

Preview Lab

Preview with #645C72

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

Preview Lab → · Contrast checker → · Palette generator →