#646668#646668

#646668 is a mid, near-neutral grey. Relative luminance 0.132; OKLCH L 50.9% C 0.004 H 248.0°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#646668
RGB	rgb(100, 102, 104)
HSL	hsl(210, 2%, 40%)
HSV	hsv(210, 4%, 41%)
CMYK	cmyk(3.8%, 1.9%, 0%, 59.2%)
CIE-LAB	lab(43.08, -0.35, -1.40)
CIE-LCH	lch(43.08, 1.44, 255.85°)
OKLab	oklab(50.92% -0.0015 -0.0037)
OKLCH	oklch(50.92% 0.004 248)
XYZ	xyz(12.5051, 13.2115, 14.9853)
Luminance	0.1321 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646668 #686664

analogous

#646868 #646668 #646468

triadic

#646668 #686466 #666864

tetradic

#646668 #686468 #686664 #646864

square

#646668 #686468 #686664 #646864

split-complementary

#646668 #686464 #686864

monochromatic

#28292A #464749 #646668 #828587 #A1A3A5

Accessibility & contrast

On white

5.77

#646668 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#646668 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646668

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646668	#FFFFFF	#000000	##FFFFFF
##646668	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656668

Deuteranopia (green-blind)

#656668

Tritanopia (blue-blind)

#636667

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #646668;
/* rgb */ color: rgb(100, 102, 104);
/* oklch */ color: oklch(50.9% 0.004 248.0);

Tailwind

colors: {
  custom: {
    50: '#909193',
    500: '#646668',
    950: '#000000',
  },
}

SCSS

$custom: #646668;
$custom-light: #909193;
$custom-dark: #000000;

JSON

{
  "hex": "#646668",
  "rgb": {
    "r": 100,
    "g": 102,
    "b": 104
  },
  "hsl": {
    "h": 210,
    "s": 1.961,
    "l": 40
  },
  "oklch": {
    "l": 0.50917,
    "c": 0.00402,
    "h": 248
  },
  "luminance": 0.13212
}

Semantic roles & 50–950 ramp

primary

#646668

secondary

#959492

accent

#947DAB

background

#F8F8F9

surface

#F0F0F1

border

#CBCBCB

text

#0C0C0D

muted

#7D7D7E

Preview Lab

Preview with #646668

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

Preview Lab → · Contrast checker → · Palette generator →