#166B8A#166B8A

#166B8A is a mid, moderate cyan. Relative luminance 0.125; OKLCH L 49.5% C 0.090 H 228.5°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX#166B8A
RGBrgb(22, 107, 138)
HSLhsl(196, 73%, 31%)
HSVhsv(196, 84%, 54%)
CMYKcmyk(84.1%, 22.5%, 0%, 45.9%)
CIE-LABlab(42.03, -12.73, -23.90)
CIE-LCHlch(42.03, 27.08, 241.97°)
OKLaboklab(49.48% -0.0596 -0.0672)
OKLCHoklch(49.48% 0.09 228.5)
XYZxyz(10.1741, 12.5197, 25.9201)
Luminance0.1252 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#166B8A #8A3516
analogous
#168A6F #166B8A #16318A
triadic
#166B8A #8A166B #6B8A16
tetradic
#166B8A #6F168A #8A3516 #318A16
square
#166B8A #6F168A #8A3516 #318A16
split-complementary
#166B8A #8A1631 #8A6F16
monochromatic
#051920 #0E4255 #166B8A #1E94BF #3BB4E0

Accessibility & contrast

On white

5.99
#166B8A on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.50
#166B8A on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166B8A
5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##166B8A#FFFFFF#000000##FFFFFF
##166B8A1.005.993.505.99
#FFFFFF5.991.0021.001.00
#0000003.5021.001.0021.00
##FFFFFF5.991.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5B698C
Deuteranopia (green-blind)
#4C5E8A
Tritanopia (blue-blind)
#007475
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #166b8a;
/* rgb */ color: rgb(22, 107, 138);
/* oklch */ color: oklch(49.5% 0.090 228.5);
Tailwind
colors: {
  custom: {
    50: '#6995ac',
    500: '#166b8a',
    950: '#000000',
  },
}
SCSS
$custom: #166b8a;
$custom-light: #6995ac;
$custom-dark: #000000;
JSON
{
  "hex": "#166b8a",
  "rgb": {
    "r": 22,
    "g": 107,
    "b": 138
  },
  "hsl": {
    "h": 196.034,
    "s": 72.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.49479,
    "c": 0.08984,
    "h": 228.5
  },
  "luminance": 0.12521
}

Semantic roles & 50–950 ramp

primary
#166B8A
secondary
#BE603E
accent
#6939EF
background
#F6F9FA
surface
#ECF1F4
border
#C7CBCE
text
#070D10
muted
#7A7E7F

Preview Lab

Preview with #166B8A

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

Preview Lab → · Contrast checker → · Palette generator →

#166B8A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva