#645A68#645A68

#645A68 is a mid, muted grey. Relative luminance 0.110; OKLCH L 48.2% C 0.025 H 316.4°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#645A68
RGB	rgb(100, 90, 104)
HSL	hsl(283, 7%, 38%)
HSV	hsv(283, 13%, 41%)
CMYK	cmyk(3.8%, 13.5%, 0%, 59.2%)
CIE-LAB	lab(39.62, 6.93, -6.52)
CIE-LCH	lch(39.62, 9.52, 316.72°)
OKLab	oklab(48.21% 0.0183 -0.0175)
OKLCH	oklch(48.21% 0.025 316.4)
XYZ	xyz(11.4100, 11.0212, 14.6202)
Luminance	0.1102 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A68 #5E685A

analogous

#5D5A68 #645A68 #685A65

triadic

#645A68 #68645A #5A6864

tetradic

#645A68 #685D5A #5E685A #5A6568

square

#645A68 #685D5A #5E685A #5A6568

split-complementary

#645A68 #65685A #5A685D

monochromatic

#252126 #443E47 #645A68 #847689 #A197A5

Accessibility & contrast

On white

6.55

#645A68 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#645A68 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A68

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A68	#FFFFFF	#000000	##FFFFFF
##645A68	1.00	6.55	3.20	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585D69

Deuteranopia (green-blind)

#5A5E67

Tritanopia (blue-blind)

#645B5F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #645a68;
/* rgb */ color: rgb(100, 90, 104);
/* oklch */ color: oklch(48.2% 0.025 316.4);

Tailwind

colors: {
  custom: {
    50: '#908893',
    500: '#645a68',
    950: '#000000',
  },
}

SCSS

$custom: #645a68;
$custom-light: #908893;
$custom-dark: #000000;

JSON

{
  "hex": "#645a68",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 104
  },
  "hsl": {
    "h": 282.857,
    "s": 7.216,
    "l": 38.039
  },
  "oklch": {
    "l": 0.48208,
    "c": 0.02531,
    "h": 316.4
  },
  "luminance": 0.11021
}

Semantic roles & 50–950 ramp

primary

#645A68

secondary

#8C9589

accent

#B07888

background

#F8F8F9

surface

#F0EFF1

border

#CBCACB

text

#0C0B0D

muted

#7D7C7E

Preview Lab

Preview with #645A68

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

Preview Lab → · Contrast checker → · Palette generator →