#645B60#645B60

#645B60 is a mid, near-neutral grey. Relative luminance 0.110; OKLCH L 48.1% C 0.014 H 343.0°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#645B60
RGB	rgb(100, 91, 96)
HSL	hsl(327, 5%, 37%)
HSV	hsv(327, 9%, 39%)
CMYK	cmyk(0%, 9%, 4%, 60.8%)
CIE-LAB	lab(39.64, 4.62, -1.55)
CIE-LCH	lch(39.64, 4.87, 341.44°)
OKLab	oklab(48.14% 0.0133 -0.0041)
OKLCH	oklch(48.14% 0.014 343)
XYZ	xyz(11.1077, 11.0362, 12.6091)
Luminance	0.1104 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645B60 #5B645F

analogous

#645B64 #645B60 #645B5C

triadic

#645B60 #60645B #5B6064

tetradic

#645B60 #64645B #5B645F #5B5C64

square

#645B60 #64645B #5B645F #5B5C64

split-complementary

#645B60 #5C645B #5B6464

monochromatic

#242122 #443E41 #645B60 #84787F #A1989D

Accessibility & contrast

On white

6.55

#645B60 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#645B60 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645B60

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645B60	#FFFFFF	#000000	##FFFFFF
##645B60	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5D60

Deuteranopia (green-blind)

#5D5E60

Tritanopia (blue-blind)

#655B5D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #645b60;
/* rgb */ color: rgb(100, 91, 96);
/* oklch */ color: oklch(48.1% 0.014 343.0);

Tailwind

colors: {
  custom: {
    50: '#90898d',
    500: '#645b60',
    950: '#000000',
  },
}

SCSS

$custom: #645b60;
$custom-light: #90898d;
$custom-dark: #000000;

JSON

{
  "hex": "#645b60",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 96
  },
  "hsl": {
    "h": 326.667,
    "s": 4.712,
    "l": 37.451
  },
  "oklch": {
    "l": 0.48142,
    "c": 0.01392,
    "h": 343
  },
  "luminance": 0.11036
}

Semantic roles & 50–950 ramp

primary

#645B60

secondary

#8A918D

accent

#AE917A

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0B0C

muted

#7D7C7D

Preview Lab

Preview with #645B60

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

Preview Lab → · Contrast checker → · Palette generator →