#646A70#646A70

#646A70 is a mid, near-neutral grey. Relative luminance 0.142; OKLCH L 52.1% C 0.012 H 248.1°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#646A70
RGB	rgb(100, 106, 112)
HSL	hsl(210, 6%, 42%)
HSV	hsv(210, 11%, 44%)
CMYK	cmyk(10.7%, 5.4%, 0%, 56.1%)
CIE-LAB	lab(44.50, -0.98, -4.14)
CIE-LCH	lch(44.50, 4.26, 256.75°)
OKLab	oklab(52.12% -0.0045 -0.0111)
OKLCH	oklch(52.12% 0.012 248.1)
XYZ	xyz(13.3336, 14.1871, 17.3620)
Luminance	0.1419 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A70 #706A64

analogous

#647070 #646A70 #646470

triadic

#646A70 #70646A #6A7064

tetradic

#646A70 #706470 #706A64 #647064

square

#646A70 #706470 #706A64 #647064

split-complementary

#646A70 #706464 #707064

monochromatic

#2A2D2F #474B50 #646A70 #82898F #A2A7AC

Accessibility & contrast

On white

5.47

#646A70 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#646A70 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A70

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A70	#FFFFFF	#000000	##FFFFFF
##646A70	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#686A70

Deuteranopia (green-blind)

#666970

Tritanopia (blue-blind)

#616B6C

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #646a70;
/* rgb */ color: rgb(100, 106, 112);
/* oklch */ color: oklch(52.1% 0.012 248.1);

Tailwind

colors: {
  custom: {
    50: '#909499',
    500: '#646a70',
    950: '#000000',
  },
}

SCSS

$custom: #646a70;
$custom-light: #909499;
$custom-dark: #000000;

JSON

{
  "hex": "#646a70",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 112
  },
  "hsl": {
    "h": 210,
    "s": 5.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.52116,
    "c": 0.012,
    "h": 248.1
  },
  "luminance": 0.14187
}

Semantic roles & 50–950 ramp

primary

#646A70

secondary

#9C9894

accent

#9479AF

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0D

muted

#7D7E7E

Preview Lab

Preview with #646A70

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

Preview Lab → · Contrast checker → · Palette generator →