#18577F#18577F

#18577F is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.8% C 0.090 H 241.7°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX#18577F
RGBrgb(24, 87, 127)
HSLhsl(203, 68%, 30%)
HSVhsv(203, 81%, 50%)
CMYKcmyk(81.1%, 31.5%, 0%, 50.2%)
CIE-LABlab(35.09, -4.66, -28.06)
CIE-LCHlch(35.09, 28.44, 260.57°)
OKLaboklab(43.79% -0.0429 -0.0795)
OKLCHoklch(43.79% 0.09 241.7)
XYZxyz(7.6141, 8.5420, 21.3220)
Luminance0.0854 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18577F #7F4018
analogous
#187F74 #18577F #18247F
triadic
#18577F #7F1857 #577F18
tetradic
#18577F #74187F #7F4018 #247F18
square
#18577F #74187F #7F4018 #247F18
split-complementary
#18577F #7F1824 #7F7418
monochromatic
#05121A #0E344C #18577F #227AB2 #389BD9

Accessibility & contrast

On white

7.75
#18577F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.71
#18577F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18577F
7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18577F#FFFFFF#000000##FFFFFF
##18577F1.007.752.717.75
#FFFFFF7.751.0021.001.00
#0000002.7121.001.0021.00
##FFFFFF7.751.0021.001.00

Color blindness preview

Protanopia (red-blind)
#445881
Deuteranopia (green-blind)
#364E7E
Tritanopia (blue-blind)
#006165
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #18577f;
/* rgb */ color: rgb(24, 87, 127);
/* oklch */ color: oklch(43.8% 0.090 241.7);
Tailwind
colors: {
  custom: {
    50: '#6686a4',
    500: '#18577f',
    950: '#000000',
  },
}
SCSS
$custom: #18577f;
$custom-light: #6686a4;
$custom-dark: #000000;
JSON
{
  "hex": "#18577f",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 127
  },
  "hsl": {
    "h": 203.301,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.43788,
    "c": 0.09035,
    "h": 241.7
  },
  "luminance": 0.08543
}

Semantic roles & 50–950 ramp

primary
#18577F
secondary
#B36C3F
accent
#803DEB
background
#F6F8FA
surface
#EBEFF4
border
#C6CACE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #18577F

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

Preview Lab → · Contrast checker → · Palette generator →

#18577F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva