#166A81#166A81

#166A81 is a mid, moderate cyan. Relative luminance 0.121; OKLCH L 48.8% C 0.083 H 221.4°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX#166A81
RGBrgb(22, 106, 129)
HSLhsl(193, 71%, 30%)
HSVhsv(193, 83%, 51%)
CMYKcmyk(82.9%, 17.8%, 0%, 49.4%)
CIE-LABlab(41.32, -15.45, -19.59)
CIE-LCHlch(41.32, 24.95, 231.74°)
OKLaboklab(48.78% -0.0622 -0.0549)
OKLCHoklch(48.78% 0.083 221.4)
XYZxyz(9.4457, 12.0624, 22.5951)
Luminance0.1206 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#166A81 #812D16
analogous
#168163 #166A81 #163581
triadic
#166A81 #81166A #6A8116
tetradic
#166A81 #631681 #812D16 #358116
square
#166A81 #631681 #812D16 #358116
split-complementary
#166A81 #811635 #816316
monochromatic
#04151A #0D3F4D #166A81 #1F95B5 #35B8DD

Accessibility & contrast

On white

6.15
#166A81 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.41
#166A81 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166A81
6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##166A81#FFFFFF#000000##FFFFFF
##166A811.006.153.416.15
#FFFFFF6.151.0021.001.00
#0000003.4121.001.0021.00
##FFFFFF6.151.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5C6782
Deuteranopia (green-blind)
#4E5D81
Tritanopia (blue-blind)
#007171
Achromatopsia (no color)
#616161

Design tokens & code

CSS
--color: #166a81;
/* rgb */ color: rgb(22, 106, 129);
/* oklch */ color: oklch(48.8% 0.083 221.4);
Tailwind
colors: {
  custom: {
    50: '#6894a5',
    500: '#166a81',
    950: '#000000',
  },
}
SCSS
$custom: #166a81;
$custom-light: #6894a5;
$custom-dark: #000000;
JSON
{
  "hex": "#166a81",
  "rgb": {
    "r": 22,
    "g": 106,
    "b": 129
  },
  "hsl": {
    "h": 192.897,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.48777,
    "c": 0.08294,
    "h": 221.4
  },
  "luminance": 0.12064
}

Semantic roles & 50–950 ramp

primary
#166A81
secondary
#B6573D
accent
#613AEE
background
#F6F9FA
surface
#ECF1F4
border
#C7CBCE
text
#070D0F
muted
#7A7E7F

Preview Lab

Preview with #166A81

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

Preview Lab → · Contrast checker → · Palette generator →

#166A81 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva