#103C5B#103C5B

#103C5B is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.072 H 243.9°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX#103C5B
RGBrgb(16, 60, 91)
HSLhsl(205, 70%, 21%)
HSVhsv(205, 82%, 36%)
CMYKcmyk(82.4%, 34.1%, 0%, 64.3%)
CIE-LABlab(23.99, -2.65, -22.74)
CIE-LCHlch(23.99, 22.89, 263.36°)
OKLaboklab(34.31% -0.0317 -0.0645)
OKLCHoklch(34.31% 0.072 243.9)
XYZxyz(3.7171, 4.0968, 10.4903)
Luminance0.0410 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#103C5B #5B2F10
analogous
#105B54 #103C5B #10165B
triadic
#103C5B #5B103C #3C5B10
tetradic
#103C5B #54105B #5B2F10 #165B10
square
#103C5B #54105B #5B2F10 #165B10
split-complementary
#103C5B #5B1016 #5B5410
monochromatic
#05111A #071A27 #103C5B #195E8F #2281C3

Accessibility & contrast

On white

11.54
#103C5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.82
#103C5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103C5B
11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##103C5B#FFFFFF#000000##FFFFFF
##103C5B1.0011.541.8211.54
#FFFFFF11.541.0021.001.00
#0000001.8221.001.0021.00
##FFFFFF11.541.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2E3D5C
Deuteranopia (green-blind)
#23365A
Tritanopia (blue-blind)
#004447
Achromatopsia (no color)
#393939

Design tokens & code

CSS
--color: #103c5b;
/* rgb */ color: rgb(16, 60, 91);
/* oklch */ color: oklch(34.3% 0.072 243.9);
Tailwind
colors: {
  custom: {
    50: '#5b7189',
    500: '#103c5b',
    950: '#000000',
  },
}
SCSS
$custom: #103c5b;
$custom-light: #5b7189;
$custom-dark: #000000;
JSON
{
  "hex": "#103c5b",
  "rgb": {
    "r": 16,
    "g": 60,
    "b": 91
  },
  "hsl": {
    "h": 204.8,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34313,
    "c": 0.07184,
    "h": 243.9
  },
  "luminance": 0.04097
}

Semantic roles & 50–950 ramp

primary
#103C5B
secondary
#945B33
accent
#843BED
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04070B
muted
#797A7C

Preview Lab

Preview with #103C5B

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

Preview Lab → · Contrast checker → · Palette generator →

#103C5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva