#636664#636664

#636664 is a mid, near-neutral grey. Relative luminance 0.131; OKLCH L 50.7% C 0.005 H 157.1°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#636664
RGB	rgb(99, 102, 100)
HSL	hsl(140, 1%, 39%)
HSV	hsv(140, 3%, 40%)
CMYK	cmyk(2.9%, 0%, 2%, 60%)
CIE-LAB	lab(42.88, -1.58, 0.72)
CIE-LCH	lch(42.88, 1.74, 155.48°)
OKLab	oklab(50.7% -0.0045 0.0019)
OKLCH	oklch(50.7% 0.005 157.1)
XYZ	xyz(12.1968, 13.0754, 13.9354)
Luminance	0.1308 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636664 #666365

analogous

#646663 #636664 #636666

triadic

#636664 #646366 #666463

tetradic

#636664 #636466 #666365 #666663

square

#636664 #636466 #666365 #666663

split-complementary

#636664 #666366 #666364

monochromatic

#272827 #454746 #636664 #818582 #A0A3A1

Accessibility & contrast

On white

5.81

#636664 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#636664 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636664

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636664	#FFFFFF	#000000	##FFFFFF
##636664	1.00	5.81	3.62	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#666564

Deuteranopia (green-blind)

#656564

Tritanopia (blue-blind)

#636665

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #636664;
/* rgb */ color: rgb(99, 102, 100);
/* oklch */ color: oklch(50.7% 0.005 157.1);

Tailwind

colors: {
  custom: {
    50: '#8f9190',
    500: '#636664',
    950: '#000000',
  },
}

SCSS

$custom: #636664;
$custom-light: #8f9190;
$custom-dark: #000000;

JSON

{
  "hex": "#636664",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 100
  },
  "hsl": {
    "h": 140,
    "s": 1.493,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50697,
    "c": 0.00485,
    "h": 157.1
  },
  "luminance": 0.13075
}

Semantic roles & 50–950 ramp

primary

#636664

secondary

#949193

accent

#7D9CAB

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0C0C

muted

#7D7D7D

Preview Lab

Preview with #636664

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

Preview Lab → · Contrast checker → · Palette generator →