#647B8A#647B8A

#647B8A is a mid, muted cyan. Relative luminance 0.187; OKLCH L 57.0% C 0.035 H 236.8°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#647B8A
RGB	rgb(100, 123, 138)
HSL	hsl(204, 16%, 47%)
HSV	hsv(204, 28%, 54%)
CMYK	cmyk(27.5%, 10.9%, 0%, 45.9%)
CIE-LAB	lab(50.35, -4.68, -10.89)
CIE-LCH	lch(50.35, 11.85, 246.75°)
OKLab	oklab(57.01% -0.0194 -0.0297)
OKLCH	oklch(57.01% 0.035 236.8)
XYZ	xyz(16.9246, 18.7096, 26.7594)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647B8A #8A7364

analogous

#648A86 #647B8A #64688A

triadic

#647B8A #8A647B #7B8A64

tetradic

#647B8A #86648A #8A7364 #688A64

square

#647B8A #86648A #8A7364 #688A64

split-complementary

#647B8A #8A6468 #8A8664

monochromatic

#313C43 #4A5B67 #647B8A #8599A6 #A8B7C0

Accessibility & contrast

On white

4.43

#647B8A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#647B8A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647B8A

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647B8A	#FFFFFF	#000000	##000000
##647B8A	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747A8B

Deuteranopia (green-blind)

#6F768A

Tritanopia (blue-blind)

#597F80

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #647b8a;
/* rgb */ color: rgb(100, 123, 138);
/* oklch */ color: oklch(57.0% 0.035 236.8);

Tailwind

colors: {
  custom: {
    50: '#91a1ac',
    500: '#647b8a',
    950: '#000000',
  },
}

SCSS

$custom: #647b8a;
$custom-light: #91a1ac;
$custom-dark: #000000;

JSON

{
  "hex": "#647b8a",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 138
  },
  "hsl": {
    "h": 203.684,
    "s": 15.966,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57006,
    "c": 0.03549,
    "h": 236.8
  },
  "luminance": 0.1871
}

Semantic roles & 50–950 ramp

primary

#647B8A

secondary

#AFA39B

accent

#8C6FB9

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0D0E10

muted

#7D7E7F

Preview Lab

Preview with #647B8A

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

Preview Lab → · Contrast checker → · Palette generator →