#18557F#18557F

#18557F is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.3% C 0.092 H 243.6°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX#18557F
RGBrgb(24, 85, 127)
HSLhsl(204, 68%, 30%)
HSVhsv(204, 81%, 50%)
CMYKcmyk(81.1%, 33.1%, 0%, 50.2%)
CIE-LABlab(34.44, -3.40, -29.07)
CIE-LCHlch(34.44, 29.27, 263.33°)
OKLaboklab(43.28% -0.0409 -0.0825)
OKLCHoklch(43.28% 0.092 243.6)
XYZxyz(7.4545, 8.2226, 21.2688)
Luminance0.0822 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18557F #7F4218
analogous
#187F76 #18557F #18227F
triadic
#18557F #7F1855 #557F18
tetradic
#18557F #76187F #7F4218 #227F18
square
#18557F #76187F #7F4218 #227F18
split-complementary
#18557F #7F1822 #7F7618
monochromatic
#05111A #0E334C #18557F #2277B2 #3898D9

Accessibility & contrast

On white

7.94
#18557F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.64
#18557F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18557F
7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18557F#FFFFFF#000000##FFFFFF
##18557F1.007.942.647.94
#FFFFFF7.941.0021.001.00
#0000002.6421.001.0021.00
##FFFFFF7.941.0021.001.00

Color blindness preview

Protanopia (red-blind)
#415681
Deuteranopia (green-blind)
#334D7E
Tritanopia (blue-blind)
#005F64
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #18557f;
/* rgb */ color: rgb(24, 85, 127);
/* oklch */ color: oklch(43.3% 0.092 243.6);
Tailwind
colors: {
  custom: {
    50: '#6684a4',
    500: '#18557f',
    950: '#000000',
  },
}
SCSS
$custom: #18557f;
$custom-light: #6684a4;
$custom-dark: #000000;
JSON
{
  "hex": "#18557f",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 127
  },
  "hsl": {
    "h": 204.466,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.43278,
    "c": 0.0921,
    "h": 243.6
  },
  "luminance": 0.08223
}

Semantic roles & 50–950 ramp

primary
#18557F
secondary
#B36F3F
accent
#843DEB
background
#F6F8FA
surface
#EBEFF4
border
#C6CACE
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #18557F

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

Preview Lab → · Contrast checker → · Palette generator →

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