#103666#103666

#103666 is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.5% C 0.094 H 256.2°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX#103666
RGBrgb(16, 54, 102)
HSLhsl(213, 73%, 23%)
HSVhsv(213, 84%, 40%)
CMYKcmyk(84.3%, 47.1%, 0%, 60%)
CIE-LABlab(22.68, 6.18, -31.99)
CIE-LCHlch(22.68, 32.58, 280.93°)
OKLaboklab(33.51% -0.0226 -0.0917)
OKLCHoklch(33.51% 0.094 256.2)
XYZxyz(3.9302, 3.7073, 13.0762)
Luminance0.0371 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#103666 #664010
analogous
#106166 #103666 #151066
triadic
#103666 #661036 #366610
tetradic
#103666 #661061 #664010 #106615
square
#103666 #661061 #664010 #106615
split-complementary
#103666 #661510 #616610
monochromatic
#040E1A #081A31 #103666 #18529B #216ED0

Accessibility & contrast

On white

12.06
#103666 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.74
#103666 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103666
12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##103666#FFFFFF#000000##FFFFFF
##1036661.0012.061.7412.06
#FFFFFF12.061.0021.001.00
#0000001.7421.001.0021.00
##FFFFFF12.061.0021.001.00

Color blindness preview

Protanopia (red-blind)
#1D3A68
Deuteranopia (green-blind)
#0B3365
Tritanopia (blue-blind)
#004149
Achromatopsia (no color)
#363636

Design tokens & code

CSS
--color: #103666;
/* rgb */ color: rgb(16, 54, 102);
/* oklch */ color: oklch(33.5% 0.094 256.2);
Tailwind
colors: {
  custom: {
    50: '#5e6c92',
    500: '#103666',
    950: '#000000',
  },
}
SCSS
$custom: #103666;
$custom-light: #5e6c92;
$custom-dark: #000000;
JSON
{
  "hex": "#103666",
  "rgb": {
    "r": 16,
    "g": 54,
    "b": 102
  },
  "hsl": {
    "h": 213.488,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33511,
    "c": 0.09445,
    "h": 256.2
  },
  "luminance": 0.03708
}

Semantic roles & 50–950 ramp

primary
#103666
secondary
#9E6F33
accent
#9F38F0
background
#F5F6F9
surface
#EAEBF1
border
#C6C6CB
text
#05060D
muted
#797A7E

Preview Lab

Preview with #103666

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

Preview Lab → · Contrast checker → · Palette generator →

#103666 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva