#647C8F#647C8F

#647C8F is a mid, muted cyan. Relative luminance 0.191; OKLCH L 57.4% C 0.041 H 242.3°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#647C8F
RGB	rgb(100, 124, 143)
HSL	hsl(207, 18%, 48%)
HSV	hsv(207, 30%, 56%)
CMYK	cmyk(30.1%, 13.3%, 0%, 43.9%)
CIE-LAB	lab(50.81, -3.97, -13.12)
CIE-LCH	lch(50.81, 13.71, 253.15°)
OKLab	oklab(57.43% -0.0189 -0.0359)
OKLCH	oklch(57.43% 0.041 242.3)
XYZ	xyz(17.4196, 19.1071, 28.7515)
Luminance	0.1911 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647C8F #8F7764

analogous

#648F8C #647C8F #64678F

triadic

#647C8F #8F647C #7C8F64

tetradic

#647C8F #8C648F #8F7764 #678F64

square

#647C8F #8C648F #8F7764 #678F64

split-complementary

#647C8F #8F6467 #8F8C64

monochromatic

#323E47 #4B5D6B #647C8F #869AAA #AAB8C3

Accessibility & contrast

On white

4.36

#647C8F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#647C8F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647C8F

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647C8F	#FFFFFF	#000000	##000000
##647C8F	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747C90

Deuteranopia (green-blind)

#6F778F

Tritanopia (blue-blind)

#578182

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #647c8f;
/* rgb */ color: rgb(100, 124, 143);
/* oklch */ color: oklch(57.4% 0.041 242.3);

Tailwind

colors: {
  custom: {
    50: '#91a1af',
    500: '#647c8f',
    950: '#000000',
  },
}

SCSS

$custom: #647c8f;
$custom-light: #91a1af;
$custom-dark: #000000;

JSON

{
  "hex": "#647c8f",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 143
  },
  "hsl": {
    "h": 206.512,
    "s": 17.695,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57432,
    "c": 0.04055,
    "h": 242.3
  },
  "luminance": 0.19108
}

Semantic roles & 50–950 ramp

primary

#647C8F

secondary

#B2A69D

accent

#8F6DBA

background

#F9F9FA

surface

#F1F2F4

border

#CBCCCE

text

#0D0F10

muted

#7E7E7F

Preview Lab

Preview with #647C8F

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

Preview Lab → · Contrast checker → · Palette generator →