#647E8A#647E8A

#647E8A is a mid, muted cyan. Relative luminance 0.195; OKLCH L 57.7% C 0.035 H 227.7°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#647E8A
RGB	rgb(100, 126, 138)
HSL	hsl(199, 16%, 47%)
HSV	hsv(199, 28%, 54%)
CMYK	cmyk(27.5%, 8.7%, 0%, 45.9%)
CIE-LAB	lab(51.23, -6.40, -9.56)
CIE-LCH	lch(51.23, 11.51, 236.22°)
OKLab	oklab(57.7% -0.0237 -0.0261)
OKLCH	oklch(57.7% 0.035 227.7)
XYZ	xyz(17.3025, 19.4653, 26.8853)
Luminance	0.1947 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647E8A #8A7064

analogous

#648A83 #647E8A #646B8A

triadic

#647E8A #8A647E #7E8A64

tetradic

#647E8A #83648A #8A7064 #6B8A64

square

#647E8A #83648A #8A7064 #6B8A64

split-complementary

#647E8A #8A646B #8A8364

monochromatic

#313D43 #4A5E67 #647E8A #859CA6 #A8B9C0

Accessibility & contrast

On white

4.29

#647E8A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#647E8A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647E8A

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647E8A	#FFFFFF	#000000	##000000
##647E8A	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#787D8B

Deuteranopia (green-blind)

#72788A

Tritanopia (blue-blind)

#588282

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #647e8a;
/* rgb */ color: rgb(100, 126, 138);
/* oklch */ color: oklch(57.7% 0.035 227.7);

Tailwind

colors: {
  custom: {
    50: '#91a3ac',
    500: '#647e8a',
    950: '#000000',
  },
}

SCSS

$custom: #647e8a;
$custom-light: #91a3ac;
$custom-dark: #000000;

JSON

{
  "hex": "#647e8a",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 138
  },
  "hsl": {
    "h": 198.947,
    "s": 15.966,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57703,
    "c": 0.03524,
    "h": 227.7
  },
  "luminance": 0.19466
}

Semantic roles & 50–950 ramp

primary

#647E8A

secondary

#AFA19B

accent

#866FB9

background

#F8FAFA

surface

#F0F3F4

border

#CBCDCE

text

#0D0F10

muted

#7D7F7F

Preview Lab

Preview with #647E8A

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

Preview Lab → · Contrast checker → · Palette generator →