#647C8A#647C8A

#647C8A is a mid, muted cyan. Relative luminance 0.190; OKLCH L 57.2% C 0.035 H 233.8°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#647C8A
RGB	rgb(100, 124, 138)
HSL	hsl(202, 16%, 47%)
HSV	hsv(202, 28%, 54%)
CMYK	cmyk(27.5%, 10.1%, 0%, 45.9%)
CIE-LAB	lab(50.64, -5.25, -10.45)
CIE-LCH	lch(50.64, 11.69, 243.31°)
OKLab	oklab(57.24% -0.0208 -0.0285)
OKLCH	oklch(57.24% 0.035 233.8)
XYZ	xyz(17.0493, 18.9589, 26.8010)
Luminance	0.1896 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647C8A #8A7264

analogous

#648A85 #647C8A #64698A

triadic

#647C8A #8A647C #7C8A64

tetradic

#647C8A #85648A #8A7264 #698A64

square

#647C8A #85648A #8A7264 #698A64

split-complementary

#647C8A #8A6469 #8A8564

monochromatic

#313C43 #4A5C67 #647C8A #859AA6 #A8B7C0

Accessibility & contrast

On white

4.38

#647C8A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#647C8A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647C8A

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647C8A	#FFFFFF	#000000	##000000
##647C8A	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#757B8B

Deuteranopia (green-blind)

#70778A

Tritanopia (blue-blind)

#598080

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #647c8a;
/* rgb */ color: rgb(100, 124, 138);
/* oklch */ color: oklch(57.2% 0.035 233.8);

Tailwind

colors: {
  custom: {
    50: '#91a1ac',
    500: '#647c8a',
    950: '#000000',
  },
}

SCSS

$custom: #647c8a;
$custom-light: #91a1ac;
$custom-dark: #000000;

JSON

{
  "hex": "#647c8a",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 138
  },
  "hsl": {
    "h": 202.105,
    "s": 15.966,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57238,
    "c": 0.0353,
    "h": 233.8
  },
  "luminance": 0.1896
}

Semantic roles & 50–950 ramp

primary

#647C8A

secondary

#AFA29B

accent

#8A6FB9

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0D0F10

muted

#7D7E7F

Preview Lab

Preview with #647C8A

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

Preview Lab → · Contrast checker → · Palette generator →