#18577A#18577A

#18577A is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.5% C 0.084 H 238.1°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX#18577A
RGBrgb(24, 87, 122)
HSLhsl(201, 67%, 29%)
HSVhsv(201, 80%, 48%)
CMYKcmyk(80.3%, 28.7%, 0%, 52.2%)
CIE-LABlab(34.83, -6.60, -25.38)
CIE-LCHlch(34.83, 26.22, 255.41°)
OKLaboklab(43.5% -0.0446 -0.0717)
OKLCHoklch(43.5% 0.084 238.1)
XYZxyz(7.2963, 8.4148, 19.6483)
Luminance0.0842 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18577A #7A3B18
analogous
#187A6C #18577A #18267A
triadic
#18577A #7A1857 #577A18
tetradic
#18577A #6C187A #7A3B18 #267A18
square
#18577A #6C187A #7A3B18 #267A18
split-complementary
#18577A #7A1826 #7A6C18
monochromatic
#05121A #0E3347 #18577A #227BAD #359DD7

Accessibility & contrast

On white

7.83
#18577A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.68
#18577A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18577A
7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18577A#FFFFFF#000000##FFFFFF
##18577A1.007.832.687.83
#FFFFFF7.831.0021.001.00
#0000002.6821.001.0021.00
##FFFFFF7.831.0021.001.00

Color blindness preview

Protanopia (red-blind)
#46577C
Deuteranopia (green-blind)
#394E79
Tritanopia (blue-blind)
#006063
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #18577a;
/* rgb */ color: rgb(24, 87, 122);
/* oklch */ color: oklch(43.5% 0.084 238.1);
Tailwind
colors: {
  custom: {
    50: '#6586a0',
    500: '#18577a',
    950: '#000000',
  },
}
SCSS
$custom: #18577a;
$custom-light: #6586a0;
$custom-dark: #000000;
JSON
{
  "hex": "#18577a",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 122
  },
  "hsl": {
    "h": 201.429,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.43502,
    "c": 0.08447,
    "h": 238.1
  },
  "luminance": 0.08416
}

Semantic roles & 50–950 ramp

primary
#18577A
secondary
#AF673F
accent
#7B3EEA
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#060B0E
muted
#7A7C7E

Preview Lab

Preview with #18577A

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

Preview Lab → · Contrast checker → · Palette generator →

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