#103F5B#103F5B

#103F5B is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.1% C 0.069 H 239.7°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX#103F5B
RGBrgb(16, 63, 91)
HSLhsl(202, 70%, 21%)
HSVhsv(202, 82%, 36%)
CMYKcmyk(82.4%, 30.8%, 0%, 64.3%)
CIE-LABlab(25.01, -4.64, -21.13)
CIE-LCHlch(25.01, 21.63, 257.61°)
OKLaboklab(35.12% -0.0349 -0.0598)
OKLCHoklch(35.12% 0.069 239.7)
XYZxyz(3.8788, 4.4200, 10.5442)
Luminance0.0442 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#103F5B #5B2C10
analogous
#105B51 #103F5B #10195B
triadic
#103F5B #5B103F #3F5B10
tetradic
#103F5B #51105B #5B2C10 #195B10
square
#103F5B #51105B #5B2C10 #195B10
split-complementary
#103F5B #5B1019 #5B5110
monochromatic
#05121A #071B27 #103F5B #19638F #2287C3

Accessibility & contrast

On white

11.15
#103F5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.88
#103F5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F5B
11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##103F5B#FFFFFF#000000##FFFFFF
##103F5B1.0011.151.8811.15
#FFFFFF11.151.0021.001.00
#0000001.8821.001.0021.00
##FFFFFF11.151.0021.001.00

Color blindness preview

Protanopia (red-blind)
#323F5C
Deuteranopia (green-blind)
#28385B
Tritanopia (blue-blind)
#004649
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #103f5b;
/* rgb */ color: rgb(16, 63, 91);
/* oklch */ color: oklch(35.1% 0.069 239.7);
Tailwind
colors: {
  custom: {
    50: '#5b7389',
    500: '#103f5b',
    950: '#000000',
  },
}
SCSS
$custom: #103f5b;
$custom-light: #5b7389;
$custom-dark: #000000;
JSON
{
  "hex": "#103f5b",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 91
  },
  "hsl": {
    "h": 202.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.35124,
    "c": 0.06919,
    "h": 239.7
  },
  "luminance": 0.04421
}

Semantic roles & 50–950 ramp

primary
#103F5B
secondary
#945733
accent
#7D3BED
background
#F5F7F8
surface
#E9EDF0
border
#C5C8CB
text
#04080B
muted
#797B7C

Preview Lab

Preview with #103F5B

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

Preview Lab → · Contrast checker → · Palette generator →

#103F5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva