#646A68#646A68

#646A68 is a mid, near-neutral grey. Relative luminance 0.140; OKLCH L 51.8% C 0.008 H 174.1°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#646A68
RGB	rgb(100, 106, 104)
HSL	hsl(160, 3%, 40%)
HSV	hsv(160, 6%, 42%)
CMYK	cmyk(5.7%, 0%, 1.9%, 58.4%)
CIE-LAB	lab(44.26, -2.72, 0.32)
CIE-LCH	lch(44.26, 2.74, 173.21°)
OKLab	oklab(51.84% -0.008 0.0008)
OKLCH	oklch(51.84% 0.008 174.1)
XYZ	xyz(12.9078, 14.0168, 15.1195)
Luminance	0.1402 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A68 #6A6466

analogous

#646A65 #646A68 #64696A

triadic

#646A68 #68646A #6A6864

tetradic

#646A68 #65646A #6A6466 #696A64

square

#646A68 #65646A #6A6466 #696A64

split-complementary

#646A68 #6A6469 #6A6564

monochromatic

#292B2A #464B49 #646A68 #828987 #A2A7A5

Accessibility & contrast

On white

5.52

#646A68 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#646A68 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A68

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A68	#FFFFFF	#000000	##FFFFFF
##646A68	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6968

Deuteranopia (green-blind)

#686868

Tritanopia (blue-blind)

#636A69

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #646a68;
/* rgb */ color: rgb(100, 106, 104);
/* oklch */ color: oklch(51.8% 0.008 174.1);

Tailwind

colors: {
  custom: {
    50: '#909493',
    500: '#646a68',
    950: '#000000',
  },
}

SCSS

$custom: #646a68;
$custom-light: #909493;
$custom-dark: #000000;

JSON

{
  "hex": "#646a68",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 104
  },
  "hsl": {
    "h": 160,
    "s": 2.913,
    "l": 40.392
  },
  "oklch": {
    "l": 0.51844,
    "c": 0.008,
    "h": 174.1
  },
  "luminance": 0.14017
}

Semantic roles & 50–950 ramp

primary

#646A68

secondary

#979394

accent

#7C8CAC

background

#F8F9F9

surface

#F0F1F1

border

#CBCBCB

text

#0C0D0D

muted

#7D7E7E

Preview Lab

Preview with #646A68

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

Preview Lab → · Contrast checker → · Palette generator →