#645E6A#645E6A

#645E6A is a mid, muted grey. Relative luminance 0.118; OKLCH L 49.2% C 0.020 H 308.0°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#645E6A
RGB	rgb(100, 94, 106)
HSL	hsl(270, 6%, 39%)
HSV	hsv(270, 11%, 42%)
CMYK	cmyk(5.7%, 11.3%, 0%, 58.4%)
CIE-LAB	lab(40.82, 4.91, -5.95)
CIE-LCH	lch(40.82, 7.72, 309.55°)
OKLab	oklab(49.17% 0.0125 -0.0159)
OKLCH	oklch(49.17% 0.02 308)
XYZ	xyz(11.8593, 11.7554, 15.2771)
Luminance	0.1176 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E6A #646A5E

analogous

#5E5E6A #645E6A #6A5E6A

triadic

#645E6A #6A645E #5E6A64

tetradic

#645E6A #6A5E5E #646A5E #5E6A6A

square

#645E6A #6A5E5E #646A5E #5E6A6A

split-complementary

#645E6A #6A6A5E #5E6A5E

monochromatic

#272429 #45414A #645E6A #837B8A #A19CA7

Accessibility & contrast

On white

6.27

#645E6A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#645E6A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E6A

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E6A	#FFFFFF	#000000	##FFFFFF
##645E6A	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C606B

Deuteranopia (green-blind)

#5D606A

Tritanopia (blue-blind)

#635F62

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #645e6a;
/* rgb */ color: rgb(100, 94, 106);
/* oklch */ color: oklch(49.2% 0.020 308.0);

Tailwind

colors: {
  custom: {
    50: '#908b94',
    500: '#645e6a',
    950: '#000000',
  },
}

SCSS

$custom: #645e6a;
$custom-light: #908b94;
$custom-dark: #000000;

JSON

{
  "hex": "#645e6a",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 106
  },
  "hsl": {
    "h": 270,
    "s": 6,
    "l": 39.216
  },
  "oklch": {
    "l": 0.49172,
    "c": 0.02023,
    "h": 308
  },
  "luminance": 0.11755
}

Semantic roles & 50–950 ramp

primary

#645E6A

secondary

#92968D

accent

#AF7994

background

#F8F8F9

surface

#F0F0F1

border

#CBCBCB

text

#0C0C0D

muted

#7D7D7E

Preview Lab

Preview with #645E6A

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

Preview Lab → · Contrast checker → · Palette generator →