#647A80#647A80

#647A80 is a mid, muted cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.027 H 216.1°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#647A80
RGB	rgb(100, 122, 128)
HSL	hsl(193, 12%, 45%)
HSV	hsv(193, 22%, 50%)
CMYK	cmyk(21.9%, 4.7%, 0%, 49.8%)
CIE-LAB	lab(49.72, -6.57, -5.94)
CIE-LCH	lch(49.72, 8.86, 222.09°)
OKLab	oklab(56.4% -0.0221 -0.0161)
OKLCH	oklch(56.4% 0.027 216.1)
XYZ	xyz(16.1103, 18.1864, 23.0794)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647A80 #806A64

analogous

#648078 #647A80 #646C80

triadic

#647A80 #80647A #7A8064

tetradic

#647A80 #786480 #806A64 #6C8064

square

#647A80 #786480 #806A64 #6C8064

split-complementary

#647A80 #80646C #807864

monochromatic

#2E393B #49595E #647A80 #83989E #A5B5B9

Accessibility & contrast

On white

4.53

#647A80 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#647A80 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647A80

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647A80	#FFFFFF	#000000	##000000
##647A80	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#767880

Deuteranopia (green-blind)

#717580

Tritanopia (blue-blind)

#5C7C7C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #647a80;
/* rgb */ color: rgb(100, 122, 128);
/* oklch */ color: oklch(56.4% 0.027 216.1);

Tailwind

colors: {
  custom: {
    50: '#90a0a4',
    500: '#647a80',
    950: '#000000',
  },
}

SCSS

$custom: #647a80;
$custom-light: #90a0a4;
$custom-dark: #000000;

JSON

{
  "hex": "#647a80",
  "rgb": {
    "r": 100,
    "g": 122,
    "b": 128
  },
  "hsl": {
    "h": 192.857,
    "s": 12.281,
    "l": 44.706
  },
  "oklch": {
    "l": 0.56403,
    "c": 0.02733,
    "h": 216.1
  },
  "luminance": 0.18187
}

Semantic roles & 50–950 ramp

primary

#647A80

secondary

#A89B98

accent

#8173B5

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0C0E0F

muted

#7D7E7F

Preview Lab

Preview with #647A80

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

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