#646E64#646E64

#646E64 is a mid, near-neutral grey. Relative luminance 0.148; OKLCH L 52.7% C 0.020 H 145.3°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#646E64
RGB	rgb(100, 110, 100)
HSL	hsl(120, 5%, 41%)
HSV	hsv(120, 9%, 43%)
CMYK	cmyk(9.1%, 0%, 9.1%, 56.9%)
CIE-LAB	lab(45.33, -5.89, 4.29)
CIE-LCH	lch(45.33, 7.28, 143.94°)
OKLab	oklab(52.66% -0.0161 0.0112)
OKLCH	oklch(52.66% 0.02 145.3)
XYZ	xyz(13.1313, 14.7812, 14.2154)
Luminance	0.1478 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646E64 #6E646E

analogous

#696E64 #646E64 #646E69

triadic

#646E64 #64646E #6E6464

tetradic

#646E64 #64696E #6E646E #6E6964

square

#646E64 #64696E #6E646E #6E6964

split-complementary

#646E64 #69646E #6E6469

monochromatic

#2A2E2A #474E47 #646E64 #828D82 #A2AAA2

Accessibility & contrast

On white

5.31

#646E64 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#646E64 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646E64

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646E64	#FFFFFF	#000000	##FFFFFF
##646E64	1.00	5.31	3.96	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E6C63

Deuteranopia (green-blind)

#6D6B64

Tritanopia (blue-blind)

#636D6B

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #646e64;
/* rgb */ color: rgb(100, 110, 100);
/* oklch */ color: oklch(52.7% 0.020 145.3);

Tailwind

colors: {
  custom: {
    50: '#909790',
    500: '#646e64',
    950: '#000000',
  },
}

SCSS

$custom: #646e64;
$custom-light: #909790;
$custom-dark: #000000;

JSON

{
  "hex": "#646e64",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 100
  },
  "hsl": {
    "h": 120,
    "s": 4.762,
    "l": 41.176
  },
  "oklch": {
    "l": 0.52657,
    "c": 0.01963,
    "h": 145.3
  },
  "luminance": 0.14781
}

Semantic roles & 50–950 ramp

primary

#646E64

secondary

#9A939A

accent

#7AAEAE

background

#F8F9F8

surface

#F0F2F0

border

#CBCCCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #646E64

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

Preview Lab → · Contrast checker → · Palette generator →