#647F9B#647F9B

#647F9B is a mid, muted cyan. Relative luminance 0.203; OKLCH L 58.6% C 0.053 H 249.7°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX#647F9B
RGBrgb(100, 127, 155)
HSLhsl(211, 22%, 50%)
HSVhsv(211, 35%, 61%)
CMYKcmyk(35.5%, 18.1%, 0%, 39.2%)
CIE-LABlab(52.12, -2.52, -18.13)
CIE-LCHlch(52.12, 18.31, 262.09°)
OKLaboklab(58.61% -0.0185 -0.05)
OKLCHoklch(58.61% 0.053 249.7)
XYZxyz(18.7595, 20.2537, 33.9249)
Luminance0.2026 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#647F9B #9B8064
analogous
#649B9B #647F9B #64649B
triadic
#647F9B #9B647F #7F9B64
tetradic
#647F9B #9B649B #9B8064 #649B64
square
#647F9B #9B649B #9B8064 #649B64
split-complementary
#647F9B #9B6464 #9B9B64
monochromatic
#344251 #4C6176 #647F9B #899EB3 #AEBCCB

Accessibility & contrast

On white

4.16
#647F9B on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.05
#647F9B on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647F9B
5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##647F9B#FFFFFF#000000##000000
##647F9B1.004.165.055.05
#FFFFFF4.161.0021.0021.00
#0000005.0521.001.001.00
##0000005.0521.001.001.00

Color blindness preview

Protanopia (red-blind)
#747F9C
Deuteranopia (green-blind)
#6E7A9A
Tritanopia (blue-blind)
#528588
Achromatopsia (no color)
#7C7C7C

Design tokens & code

CSS
--color: #647f9b;
/* rgb */ color: rgb(100, 127, 155);
/* oklch */ color: oklch(58.6% 0.053 249.7);
Tailwind
colors: {
  custom: {
    50: '#92a4b8',
    500: '#647f9b',
    950: '#000000',
  },
}
SCSS
$custom: #647f9b;
$custom-light: #92a4b8;
$custom-dark: #000000;
JSON
{
  "hex": "#647f9b",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 155
  },
  "hsl": {
    "h": 210.545,
    "s": 21.569,
    "l": 50
  },
  "oklch": {
    "l": 0.58609,
    "c": 0.05329,
    "h": 249.7
  },
  "luminance": 0.20255
}

Semantic roles & 50–950 ramp

primary
#647F9B
secondary
#BAAEA1
accent
#956ABE
background
#F9FAFB
surface
#F1F3F6
border
#CBCDD0
text
#0D0F11
muted
#7E7F80

Preview Lab

Preview with #647F9B

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

Preview Lab → · Contrast checker → · Palette generator →

#647F9B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva