#645E6C#645E6C

#645E6C is a mid, muted grey. Relative luminance 0.118; OKLCH L 49.2% C 0.023 H 304.9°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#645E6C
RGB	rgb(100, 94, 108)
HSL	hsl(266, 7%, 40%)
HSV	hsv(266, 13%, 42%)
CMYK	cmyk(7.4%, 13%, 0%, 57.6%)
CIE-LAB	lab(40.89, 5.36, -7.08)
CIE-LCH	lch(40.89, 8.88, 307.13°)
OKLab	oklab(49.25% 0.0133 -0.019)
OKLCH	oklch(49.25% 0.023 304.9)
XYZ	xyz(11.9645, 11.7975, 15.8313)
Luminance	0.1180 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E6C #666C5E

analogous

#5E5F6C #645E6C #6B5E6C

triadic

#645E6C #6C645E #5E6C64

tetradic

#645E6C #6C5E5F #666C5E #5E6C6B

square

#645E6C #6C5E5F #666C5E #5E6C6B

split-complementary

#645E6C #6C6B5E #5F6C5E

monochromatic

#27252B #46424B #645E6C #827B8C #A19CA9

Accessibility & contrast

On white

6.25

#645E6C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#645E6C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E6C

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E6C	#FFFFFF	#000000	##FFFFFF
##645E6C	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C606D

Deuteranopia (green-blind)

#5D606C

Tritanopia (blue-blind)

#636063

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #645e6c;
/* rgb */ color: rgb(100, 94, 108);
/* oklch */ color: oklch(49.2% 0.023 304.9);

Tailwind

colors: {
  custom: {
    50: '#908b96',
    500: '#645e6c',
    950: '#000000',
  },
}

SCSS

$custom: #645e6c;
$custom-light: #908b96;
$custom-dark: #000000;

JSON

{
  "hex": "#645e6c",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 108
  },
  "hsl": {
    "h": 265.714,
    "s": 6.931,
    "l": 39.608
  },
  "oklch": {
    "l": 0.49247,
    "c": 0.02318,
    "h": 304.9
  },
  "luminance": 0.11797
}

Semantic roles & 50–950 ramp

primary

#645E6C

secondary

#94988E

accent

#B07898

background

#F8F8F9

surface

#F0F0F1

border

#CBCBCB

text

#0C0C0D

muted

#7D7D7E

Preview Lab

Preview with #645E6C

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

Preview Lab → · Contrast checker → · Palette generator →