#18557A#18557A

#18557A is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.0% C 0.086 H 240.3°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX#18557A
RGBrgb(24, 85, 122)
HSLhsl(203, 67%, 29%)
HSVhsv(203, 80%, 48%)
CMYKcmyk(80.3%, 30.3%, 0%, 52.2%)
CIE-LABlab(34.18, -5.36, -26.40)
CIE-LCHlch(34.18, 26.94, 258.53°)
OKLaboklab(42.99% -0.0426 -0.0747)
OKLCHoklch(42.99% 0.086 240.3)
XYZxyz(7.1367, 8.0955, 19.5950)
Luminance0.0810 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18557A #7A3D18
analogous
#187A6E #18557A #18247A
triadic
#18557A #7A1855 #557A18
tetradic
#18557A #6E187A #7A3D18 #247A18
square
#18557A #6E187A #7A3D18 #247A18
split-complementary
#18557A #7A1824 #7A6E18
monochromatic
#05121A #0E3147 #18557A #2279AD #359AD7

Accessibility & contrast

On white

8.02
#18557A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.62
#18557A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18557A
8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18557A#FFFFFF#000000##FFFFFF
##18557A1.008.022.628.02
#FFFFFF8.021.0021.001.00
#0000002.6221.001.0021.00
##FFFFFF8.021.0021.001.00

Color blindness preview

Protanopia (red-blind)
#44557C
Deuteranopia (green-blind)
#364C79
Tritanopia (blue-blind)
#005E62
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #18557a;
/* rgb */ color: rgb(24, 85, 122);
/* oklch */ color: oklch(43.0% 0.086 240.3);
Tailwind
colors: {
  custom: {
    50: '#6584a0',
    500: '#18557a',
    950: '#000000',
  },
}
SCSS
$custom: #18557a;
$custom-light: #6584a0;
$custom-dark: #000000;
JSON
{
  "hex": "#18557a",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 122
  },
  "hsl": {
    "h": 202.653,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.42985,
    "c": 0.086,
    "h": 240.3
  },
  "luminance": 0.08096
}

Semantic roles & 50–950 ramp

primary
#18557A
secondary
#AF693F
accent
#7F3EEA
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#060B0F
muted
#7A7C7E

Preview Lab

Preview with #18557A

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

Preview Lab → · Contrast checker → · Palette generator →

#18557A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva