#103E5B#103E5B

#103E5B is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.070 H 241.1°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX#103E5B
RGBrgb(16, 62, 91)
HSLhsl(203, 70%, 21%)
HSVhsv(203, 82%, 36%)
CMYKcmyk(82.4%, 31.9%, 0%, 64.3%)
CIE-LABlab(24.67, -3.98, -21.67)
CIE-LCHlch(24.67, 22.03, 259.58°)
OKLaboklab(34.85% -0.0338 -0.0613)
OKLCHoklch(34.85% 0.07 241.1)
XYZxyz(3.8239, 4.3103, 10.5259)
Luminance0.0431 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#103E5B #5B2D10
analogous
#105B52 #103E5B #10185B
triadic
#103E5B #5B103E #3E5B10
tetradic
#103E5B #52105B #5B2D10 #185B10
square
#103E5B #52105B #5B2D10 #185B10
split-complementary
#103E5B #5B1018 #5B5210
monochromatic
#05121A #071B27 #103E5B #19618F #2285C3

Accessibility & contrast

On white

11.28
#103E5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.86
#103E5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103E5B
11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##103E5B#FFFFFF#000000##FFFFFF
##103E5B1.0011.281.8611.28
#FFFFFF11.281.0021.001.00
#0000001.8621.001.0021.00
##FFFFFF11.281.0021.001.00

Color blindness preview

Protanopia (red-blind)
#303E5C
Deuteranopia (green-blind)
#26375A
Tritanopia (blue-blind)
#004548
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #103e5b;
/* rgb */ color: rgb(16, 62, 91);
/* oklch */ color: oklch(34.9% 0.070 241.1);
Tailwind
colors: {
  custom: {
    50: '#5b7389',
    500: '#103e5b',
    950: '#000000',
  },
}
SCSS
$custom: #103e5b;
$custom-light: #5b7389;
$custom-dark: #000000;
JSON
{
  "hex": "#103e5b",
  "rgb": {
    "r": 16,
    "g": 62,
    "b": 91
  },
  "hsl": {
    "h": 203.2,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34853,
    "c": 0.07004,
    "h": 241.1
  },
  "luminance": 0.04311
}

Semantic roles & 50–950 ramp

primary
#103E5B
secondary
#945833
accent
#803BED
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04080B
muted
#797B7C

Preview Lab

Preview with #103E5B

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

Preview Lab → · Contrast checker → · Palette generator →

#103E5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva