#646E72#646E72

#646E72 is a mid, near-neutral grey. Relative luminance 0.151; OKLCH L 53.1% C 0.014 H 223.7°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#646E72
RGB	rgb(100, 110, 114)
HSL	hsl(197, 7%, 42%)
HSV	hsv(197, 12%, 45%)
CMYK	cmyk(12.3%, 3.5%, 0%, 55.3%)
CIE-LAB	lab(45.74, -2.89, -3.52)
CIE-LCH	lch(45.74, 4.55, 230.61°)
OKLab	oklab(53.11% -0.0099 -0.0095)
OKLCH	oklch(53.11% 0.014 223.7)
XYZ	xyz(13.8680, 15.0759, 18.0956)
Luminance	0.1508 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E72 #726864

analogous

#64726F #646E72 #646772

triadic

#646E72 #72646E #6E7264

tetradic

#646E72 #6F6472 #726864 #677264

square

#646E72 #6F6472 #726864 #677264

split-complementary

#646E72 #726467 #726F64

monochromatic

#2B2F31 #474F51 #646E72 #828D91 #A3ABAE

Accessibility & contrast

On white

5.23

#646E72 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#646E72 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E72

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E72	#FFFFFF	#000000	##FFFFFF
##646E72	1.00	5.23	4.02	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C6D72

Deuteranopia (green-blind)

#696C72

Tritanopia (blue-blind)

#606F6F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #646e72;
/* rgb */ color: rgb(100, 110, 114);
/* oklch */ color: oklch(53.1% 0.014 223.7);

Tailwind

colors: {
  custom: {
    50: '#90979a',
    500: '#646e72',
    950: '#000000',
  },
}

SCSS

$custom: #646e72;
$custom-light: #90979a;
$custom-dark: #000000;

JSON

{
  "hex": "#646e72",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 114
  },
  "hsl": {
    "h": 197.143,
    "s": 6.542,
    "l": 41.961
  },
  "oklch": {
    "l": 0.53111,
    "c": 0.01371,
    "h": 223.7
  },
  "luminance": 0.15076
}

Semantic roles & 50–950 ramp

primary

#646E72

secondary

#9E9794

accent

#8878B0

background

#F8F9F9

surface

#F0F2F2

border

#CBCCCC

text

#0C0D0E

muted

#7D7E7E

Preview Lab

Preview with #646E72

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

Preview Lab → · Contrast checker → · Palette generator →