#647C8D#647C8D

#647C8D is a mid, muted cyan. Relative luminance 0.190; OKLCH L 57.4% C 0.038 H 239.2°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#647C8D
RGB	rgb(100, 124, 141)
HSL	hsl(205, 17%, 47%)
HSV	hsv(205, 29%, 55%)
CMYK	cmyk(29.1%, 12.1%, 0%, 44.7%)
CIE-LAB	lab(50.74, -4.49, -12.05)
CIE-LCH	lch(50.74, 12.86, 249.57°)
OKLab	oklab(57.35% -0.0196 -0.0329)
OKLCH	oklch(57.35% 0.038 239.2)
XYZ	xyz(17.2695, 19.0470, 27.9607)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647C8D #8D7564

analogous

#648D89 #647C8D #64688D

triadic

#647C8D #8D647C #7C8D64

tetradic

#647C8D #89648D #8D7564 #688D64

square

#647C8D #89648D #8D7564 #688D64

split-complementary

#647C8D #8D6468 #8D8964

monochromatic

#313D45 #4B5D69 #647C8D #859AA9 #A9B8C2

Accessibility & contrast

On white

4.37

#647C8D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#647C8D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647C8D

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647C8D	#FFFFFF	#000000	##000000
##647C8D	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#757B8E

Deuteranopia (green-blind)

#6F778D

Tritanopia (blue-blind)

#588081

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #647c8d;
/* rgb */ color: rgb(100, 124, 141);
/* oklch */ color: oklch(57.4% 0.038 239.2);

Tailwind

colors: {
  custom: {
    50: '#91a1ae',
    500: '#647c8d',
    950: '#000000',
  },
}

SCSS

$custom: #647c8d;
$custom-light: #91a1ae;
$custom-dark: #000000;

JSON

{
  "hex": "#647c8d",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 141
  },
  "hsl": {
    "h": 204.878,
    "s": 17.012,
    "l": 47.255
  },
  "oklch": {
    "l": 0.57353,
    "c": 0.03836,
    "h": 239.2
  },
  "luminance": 0.19048
}

Semantic roles & 50–950 ramp

primary

#647C8D

secondary

#B1A59C

accent

#8D6EBA

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0D0F10

muted

#7D7E7F

Preview Lab

Preview with #647C8D

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

Preview Lab → · Contrast checker → · Palette generator →