#18598F#18598F

#18598F is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.3% C 0.109 H 248.5°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX#18598F
RGBrgb(24, 89, 143)
HSLhsl(207, 71%, 33%)
HSVhsv(207, 83%, 56%)
CMYKcmyk(83.2%, 37.8%, 0%, 43.9%)
CIE-LABlab(36.60, 0.39, -35.45)
CIE-LCHlch(36.60, 35.45, 270.63°)
OKLaboklab(45.26% -0.0399 -0.1011)
OKLCHoklch(45.26% 0.109 248.5)
XYZxyz(8.9051, 9.3210, 27.3111)
Luminance0.0932 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18598F #8F4E18
analogous
#188F89 #18598F #181E8F
triadic
#18598F #8F1859 #598F18
tetradic
#18598F #89188F #8F4E18 #1E8F18
square
#18598F #89188F #8F4E18 #1E8F18
split-complementary
#18598F #8F181E #8F8918
monochromatic
#061826 #0F385B #18598F #217AC3 #4298DF

Accessibility & contrast

On white

7.33
#18598F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.86
#18598F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18598F
7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18598F#FFFFFF#000000##FFFFFF
##18598F1.007.332.867.33
#FFFFFF7.331.0021.001.00
#0000002.8621.001.0021.00
##FFFFFF7.331.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3F5C91
Deuteranopia (green-blind)
#2D518E
Tritanopia (blue-blind)
#00666D
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #18598f;
/* rgb */ color: rgb(24, 89, 143);
/* oklch */ color: oklch(45.3% 0.109 248.5);
Tailwind
colors: {
  custom: {
    50: '#6a87b0',
    500: '#18598f',
    950: '#000000',
  },
}
SCSS
$custom: #18598f;
$custom-light: #6a87b0;
$custom-dark: #000000;
JSON
{
  "hex": "#18598f",
  "rgb": {
    "r": 24,
    "g": 89,
    "b": 143
  },
  "hsl": {
    "h": 207.227,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.45262,
    "c": 0.10866,
    "h": 248.5
  },
  "luminance": 0.09322
}

Semantic roles & 50–950 ramp

primary
#18598F
secondary
#C07C43
accent
#8C3AEE
background
#F6F8FA
surface
#ECEFF5
border
#C7CACF
text
#080B10
muted
#7A7C7F

Preview Lab

Preview with #18598F

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

Preview Lab → · Contrast checker → · Palette generator →

#18598F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva