#51666D#51666D

#51666D is a mid, muted cyan. Relative luminance 0.124; OKLCH L 49.6% C 0.028 H 220.1°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX#51666D
RGBrgb(81, 102, 109)
HSLhsl(195, 15%, 37%)
HSVhsv(195, 26%, 43%)
CMYKcmyk(25.7%, 6.4%, 0%, 57.3%)
CIE-LABlab(41.78, -6.08, -6.53)
CIE-LCHlch(41.78, 8.92, 227.02°)
OKLaboklab(49.57% -0.0211 -0.0178)
OKLCHoklch(49.57% 0.028 220.1)
XYZxyz(10.9042, 12.3558, 16.2754)
Luminance0.1236 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51666D #6D5851
analogous
#516D66 #51666D #51586D
triadic
#51666D #6D5166 #666D51
tetradic
#51666D #66516D #6D5851 #586D51
square
#51666D #66516D #6D5851 #586D51
split-complementary
#51666D #6D5158 #6D6651
monochromatic
#1D2427 #37454A #51666D #6B8790 #8EA3AB

Accessibility & contrast

On white

6.05
#51666D on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.47
#51666D on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51666D
6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51666D#FFFFFF#000000##FFFFFF
##51666D1.006.053.476.05
#FFFFFF6.051.0021.001.00
#0000003.4721.001.0021.00
##FFFFFF6.051.0021.001.00

Color blindness preview

Protanopia (red-blind)
#62656D
Deuteranopia (green-blind)
#5D616D
Tritanopia (blue-blind)
#496868
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #51666d;
/* rgb */ color: rgb(81, 102, 109);
/* oklch */ color: oklch(49.6% 0.028 220.1);
Tailwind
colors: {
  custom: {
    50: '#829196',
    500: '#51666d',
    950: '#000000',
  },
}
SCSS
$custom: #51666d;
$custom-light: #829196;
$custom-dark: #000000;
JSON
{
  "hex": "#51666d",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 109
  },
  "hsl": {
    "h": 195,
    "s": 14.737,
    "l": 37.255
  },
  "oklch": {
    "l": 0.49571,
    "c": 0.02756,
    "h": 220.1
  },
  "luminance": 0.12356
}

Semantic roles & 50–950 ramp

primary
#51666D
secondary
#998781
accent
#8270B8
background
#F8F8F9
surface
#EFF0F2
border
#CACBCC
text
#0A0C0D
muted
#7C7D7E

Preview Lab

Preview with #51666D

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

Preview Lab → · Contrast checker → · Palette generator →

#51666D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva