#647E99#647E99

#647E99 is a mid, muted cyan. Relative luminance 0.199; OKLCH L 58.3% C 0.051 H 249.7°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX#647E99
RGBrgb(100, 126, 153)
HSLhsl(211, 21%, 50%)
HSVhsv(211, 35%, 60%)
CMYKcmyk(34.6%, 17.6%, 0%, 40%)
CIE-LABlab(51.76, -2.48, -17.53)
CIE-LCHlch(51.76, 17.70, 261.94°)
OKLaboklab(58.3% -0.0179 -0.0483)
OKLCHoklch(58.3% 0.051 249.7)
XYZxyz(18.4644, 19.9301, 33.0048)
Luminance0.1993 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#647E99 #997F64
analogous
#649999 #647E99 #646499
triadic
#647E99 #99647E #7E9964
tetradic
#647E99 #996499 #997F64 #649964
square
#647E99 #996499 #997F64 #649964
split-complementary
#647E99 #996464 #999964
monochromatic
#34414F #4C6074 #647E99 #899DB2 #AEBBCA

Accessibility & contrast

On white

4.21
#647E99 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.99
#647E99 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647E99
4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##647E99#FFFFFF#000000##000000
##647E991.004.214.994.99
#FFFFFF4.211.0021.0021.00
#0000004.9921.001.001.00
##0000004.9921.001.001.00

Color blindness preview

Protanopia (red-blind)
#747E9A
Deuteranopia (green-blind)
#6D7998
Tritanopia (blue-blind)
#538487
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #647e99;
/* rgb */ color: rgb(100, 126, 153);
/* oklch */ color: oklch(58.3% 0.051 249.7);
Tailwind
colors: {
  custom: {
    50: '#92a3b7',
    500: '#647e99',
    950: '#000000',
  },
}
SCSS
$custom: #647e99;
$custom-light: #92a3b7;
$custom-dark: #000000;
JSON
{
  "hex": "#647e99",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 153
  },
  "hsl": {
    "h": 210.566,
    "s": 20.949,
    "l": 49.608
  },
  "oklch": {
    "l": 0.58297,
    "c": 0.05146,
    "h": 249.7
  },
  "luminance": 0.19931
}

Semantic roles & 50–950 ramp

primary
#647E99
secondary
#B9ADA0
accent
#956ABE
background
#F9FAFB
surface
#F1F3F6
border
#CBCDD0
text
#0D0F11
muted
#7E7F80

Preview Lab

Preview with #647E99

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

Preview Lab → · Contrast checker → · Palette generator →

#647E99 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva