#637366#637366

#637366 is a mid, muted grey. Relative luminance 0.159; OKLCH L 53.8% C 0.028 H 150.8°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#637366
RGB	rgb(99, 115, 102)
HSL	hsl(131, 7%, 42%)
HSV	hsv(131, 14%, 45%)
CMYK	cmyk(13.9%, 0%, 11.3%, 54.9%)
CIE-LAB	lab(46.81, -8.73, 5.20)
CIE-LCH	lch(46.81, 10.16, 149.22°)
OKLab	oklab(53.83% -0.0242 0.0135)
OKLCH	oklch(53.83% 0.028 150.8)
XYZ	xyz(13.6741, 15.8732, 14.9112)
Luminance	0.1587 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637366 #736370

analogous

#687363 #637366 #63736E

triadic

#637366 #666373 #736663

tetradic

#637366 #636873 #736370 #736E63

square

#637366 #636873 #736370 #736E63

split-complementary

#637366 #6E6373 #736368

monochromatic

#2A312C #475249 #637366 #819284 #A2AFA4

Accessibility & contrast

On white

5.03

#637366 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#637366 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637366

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637366	#FFFFFF	#000000	##FFFFFF
##637366	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#737065

Deuteranopia (green-blind)

#706E67

Tritanopia (blue-blind)

#61726F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #637366;
/* rgb */ color: rgb(99, 115, 102);
/* oklch */ color: oklch(53.8% 0.028 150.8);

Tailwind

colors: {
  custom: {
    50: '#8f9b91',
    500: '#637366',
    950: '#000000',
  },
}

SCSS

$custom: #637366;
$custom-light: #8f9b91;
$custom-dark: #000000;

JSON

{
  "hex": "#637366",
  "rgb": {
    "r": 99,
    "g": 115,
    "b": 102
  },
  "hsl": {
    "h": 131.25,
    "s": 7.477,
    "l": 41.961
  },
  "oklch": {
    "l": 0.53825,
    "c": 0.02769,
    "h": 150.8
  },
  "luminance": 0.15873
}

Semantic roles & 50–950 ramp

primary

#637366

secondary

#9E949C

accent

#77A6B1

background

#F8F9F8

surface

#F0F2F0

border

#CBCCCB

text

#0C0E0C

muted

#7D7E7D

Preview Lab

Preview with #637366

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

Preview Lab → · Contrast checker → · Palette generator →