#18597D#18597D

#18597D is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.2% C 0.086 H 238.2°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).

Color values

HEX#18597D
RGBrgb(24, 89, 125)
HSLhsl(201, 68%, 29%)
HSVhsv(201, 81%, 49%)
CMYKcmyk(80.8%, 28.8%, 0%, 51%)
CIE-LABlab(35.63, -6.68, -25.97)
CIE-LCHlch(35.63, 26.82, 255.57°)
OKLaboklab(44.19% -0.0456 -0.0734)
OKLCHoklch(44.19% 0.086 238.2)
XYZxyz(7.6493, 8.8187, 20.6971)
Luminance0.0882 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18597D #7D3C18
analogous
#187D6F #18597D #18277D
triadic
#18597D #7D1859 #597D18
tetradic
#18597D #6F187D #7D3C18 #277D18
square
#18597D #6F187D #7D3C18 #277D18
split-complementary
#18597D #7D1827 #7D6F18
monochromatic
#05121A #0E344A #18597D #227EB0 #379FD9

Accessibility & contrast

On white

7.60
#18597D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.76
#18597D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18597D
7.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18597D#FFFFFF#000000##FFFFFF
##18597D1.007.602.767.60
#FFFFFF7.601.0021.001.00
#0000002.7621.001.0021.00
##FFFFFF7.601.0021.001.00

Color blindness preview

Protanopia (red-blind)
#48597F
Deuteranopia (green-blind)
#3A507C
Tritanopia (blue-blind)
#006265
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #18597d;
/* rgb */ color: rgb(24, 89, 125);
/* oklch */ color: oklch(44.2% 0.086 238.2);
Tailwind
colors: {
  custom: {
    50: '#6687a3',
    500: '#18597d',
    950: '#000000',
  },
}
SCSS
$custom: #18597d;
$custom-light: #6687a3;
$custom-dark: #000000;
JSON
{
  "hex": "#18597d",
  "rgb": {
    "r": 24,
    "g": 89,
    "b": 125
  },
  "hsl": {
    "h": 201.386,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.44187,
    "c": 0.08643,
    "h": 238.2
  },
  "luminance": 0.0882
}

Semantic roles & 50–950 ramp

primary
#18597D
secondary
#B2683F
accent
#7B3DEB
background
#F6F8FA
surface
#EBEFF3
border
#C6CACD
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #18597D

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

Preview Lab → · Contrast checker → · Palette generator →

#18597D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva