#103B5B#103B5B

#103B5B is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.073 H 245.1°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX#103B5B
RGBrgb(16, 59, 91)
HSLhsl(206, 70%, 21%)
HSVhsv(206, 82%, 36%)
CMYKcmyk(82.4%, 35.2%, 0%, 64.3%)
CIE-LABlab(23.65, -1.97, -23.28)
CIE-LCHlch(23.65, 23.36, 265.15°)
OKLaboklab(34.04% -0.0306 -0.0661)
OKLCHoklch(34.04% 0.073 245.1)
XYZxyz(3.6652, 3.9930, 10.4731)
Luminance0.0399 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#103B5B #5B3010
analogous
#105B55 #103B5B #10155B
triadic
#103B5B #5B103B #3B5B10
tetradic
#103B5B #55105B #5B3010 #155B10
square
#103B5B #55105B #5B3010 #155B10
split-complementary
#103B5B #5B1015 #5B5510
monochromatic
#05111A #071927 #103B5B #195D8F #227EC3

Accessibility & contrast

On white

11.68
#103B5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.80
#103B5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103B5B
11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##103B5B#FFFFFF#000000##FFFFFF
##103B5B1.0011.681.8011.68
#FFFFFF11.681.0021.001.00
#0000001.8021.001.0021.00
##FFFFFF11.681.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2C3C5C
Deuteranopia (green-blind)
#22355A
Tritanopia (blue-blind)
#004346
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #103b5b;
/* rgb */ color: rgb(16, 59, 91);
/* oklch */ color: oklch(34.0% 0.073 245.1);
Tailwind
colors: {
  custom: {
    50: '#5b7089',
    500: '#103b5b',
    950: '#000000',
  },
}
SCSS
$custom: #103b5b;
$custom-light: #5b7089;
$custom-dark: #000000;
JSON
{
  "hex": "#103b5b",
  "rgb": {
    "r": 16,
    "g": 59,
    "b": 91
  },
  "hsl": {
    "h": 205.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34044,
    "c": 0.07281,
    "h": 245.1
  },
  "luminance": 0.03993
}

Semantic roles & 50–950 ramp

primary
#103B5B
secondary
#945C33
accent
#873BED
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04070B
muted
#797A7C

Preview Lab

Preview with #103B5B

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

Preview Lab → · Contrast checker → · Palette generator →

#103B5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva