#183F60#183F60

#183F60 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.072 H 247.2°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX#183F60
RGBrgb(24, 63, 96)
HSLhsl(208, 60%, 24%)
HSVhsv(208, 75%, 38%)
CMYKcmyk(75%, 34.4%, 0%, 62.4%)
CIE-LABlab(25.54, -1.39, -23.53)
CIE-LCHlch(25.54, 23.57, 266.61°)
OKLaboklab(35.7% -0.0281 -0.0666)
OKLCHoklch(35.7% 0.072 247.2)
XYZxyz(4.2647, 4.5933, 11.7259)
Luminance0.0459 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#183F60 #603918
analogous
#18605D #183F60 #181B60
triadic
#183F60 #60183F #3F6018
tetradic
#183F60 #5D1860 #603918 #1B6018
square
#183F60 #5D1860 #603918 #1B6018
split-complementary
#183F60 #60181B #605D18
monochromatic
#061018 #0C1F2F #183F60 #245F91 #307FC2

Accessibility & contrast

On white

10.94
#183F60 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.92
#183F60 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F60
10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##183F60#FFFFFF#000000##FFFFFF
##183F601.0010.941.9210.94
#FFFFFF10.941.0021.001.00
#0000001.9221.001.0021.00
##FFFFFF10.941.0021.001.00

Color blindness preview

Protanopia (red-blind)
#304061
Deuteranopia (green-blind)
#26395F
Tritanopia (blue-blind)
#00474B
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #183f60;
/* rgb */ color: rgb(24, 63, 96);
/* oklch */ color: oklch(35.7% 0.072 247.2);
Tailwind
colors: {
  custom: {
    50: '#5f738d',
    500: '#183f60',
    950: '#000000',
  },
}
SCSS
$custom: #183f60;
$custom-light: #5f738d;
$custom-dark: #000000;
JSON
{
  "hex": "#183f60",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 96
  },
  "hsl": {
    "h": 207.5,
    "s": 60,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35704,
    "c": 0.07232,
    "h": 247.2
  },
  "luminance": 0.04594
}

Semantic roles & 50–950 ramp

primary
#183F60
secondary
#96663D
accent
#8D45E3
background
#F5F6F8
surface
#EAECF0
border
#C6C7CB
text
#05080C
muted
#797B7D

Preview Lab

Preview with #183F60

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

Preview Lab → · Contrast checker → · Palette generator →

#183F60 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva