#646A76#646A76

#646A76 is a mid, muted blue. Relative luminance 0.143; OKLCH L 52.3% C 0.020 H 264.4°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#646A76
RGB	rgb(100, 106, 118)
HSL	hsl(220, 8%, 43%)
HSV	hsv(220, 15%, 46%)
CMYK	cmyk(15.3%, 10.2%, 0%, 53.7%)
CIE-LAB	lab(44.70, 0.40, -7.47)
CIE-LCH	lch(44.70, 7.48, 273.09°)
OKLab	oklab(52.33% -0.002 -0.0202)
OKLCH	oklch(52.33% 0.02 264.4)
XYZ	xyz(13.6788, 14.3252, 19.1804)
Luminance	0.1432 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A76 #767064

analogous

#647376 #646A76 #676476

triadic

#646A76 #76646A #6A7664

tetradic

#646A76 #766473 #767064 #647667

square

#646A76 #766473 #767064 #647667

split-complementary

#646A76 #766764 #737664

monochromatic

#2C2E34 #484C55 #646A76 #828895 #A3A8B1

Accessibility & contrast

On white

5.43

#646A76 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#646A76 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A76

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A76	#FFFFFF	#000000	##FFFFFF
##646A76	1.00	5.43	3.86	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#666B77

Deuteranopia (green-blind)

#656976

Tritanopia (blue-blind)

#606C6E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #646a76;
/* rgb */ color: rgb(100, 106, 118);
/* oklch */ color: oklch(52.3% 0.020 264.4);

Tailwind

colors: {
  custom: {
    50: '#90949d',
    500: '#646a76',
    950: '#000000',
  },
}

SCSS

$custom: #646a76;
$custom-light: #90949d;
$custom-dark: #000000;

JSON

{
  "hex": "#646a76",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 118
  },
  "hsl": {
    "h": 220,
    "s": 8.257,
    "l": 42.745
  },
  "oklch": {
    "l": 0.52334,
    "c": 0.02027,
    "h": 264.4
  },
  "luminance": 0.14325
}

Semantic roles & 50–950 ramp

primary

#646A76

secondary

#A19D95

accent

#9E77B1

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0E

muted

#7D7E7E

Preview Lab

Preview with #646A76

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

Preview Lab → · Contrast checker → · Palette generator →