#17578C#17578C

#17578C is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.6% C 0.107 H 248.4°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX#17578C
RGBrgb(23, 87, 140)
HSLhsl(207, 72%, 32%)
HSVhsv(207, 84%, 55%)
CMYKcmyk(83.6%, 37.9%, 0%, 45.1%)
CIE-LABlab(35.77, 0.38, -34.93)
CIE-LCHlch(35.77, 34.94, 270.62°)
OKLaboklab(44.55% -0.0394 -0.0996)
OKLCHoklch(44.55% 0.107 248.4)
XYZxyz(8.4934, 8.8909, 26.0743)
Luminance0.0889 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#17578C #8C4C17
analogous
#178C86 #17578C #171D8C
triadic
#17578C #8C1757 #578C17
tetradic
#17578C #86178C #8C4C17 #1D8C17
square
#17578C #86178C #8C4C17 #1D8C17
split-complementary
#17578C #8C171D #8C8617
monochromatic
#061623 #0E3657 #17578C #2078C1 #3E96DF

Accessibility & contrast

On white

7.56
#17578C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.78
#17578C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17578C
7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##17578C#FFFFFF#000000##FFFFFF
##17578C1.007.562.787.56
#FFFFFF7.561.0021.001.00
#0000002.7821.001.0021.00
##FFFFFF7.561.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3E5A8E
Deuteranopia (green-blind)
#2C4F8B
Tritanopia (blue-blind)
#00646B
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #17578c;
/* rgb */ color: rgb(23, 87, 140);
/* oklch */ color: oklch(44.6% 0.107 248.4);
Tailwind
colors: {
  custom: {
    50: '#6986ae',
    500: '#17578c',
    950: '#000000',
  },
}
SCSS
$custom: #17578c;
$custom-light: #6986ae;
$custom-dark: #000000;
JSON
{
  "hex": "#17578c",
  "rgb": {
    "r": 23,
    "g": 87,
    "b": 140
  },
  "hsl": {
    "h": 207.179,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.44554,
    "c": 0.10711,
    "h": 248.4
  },
  "luminance": 0.08892
}

Semantic roles & 50–950 ramp

primary
#17578C
secondary
#BF793F
accent
#8B39EF
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070B10
muted
#7A7C7F

Preview Lab

Preview with #17578C

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

Preview Lab → · Contrast checker → · Palette generator →

#17578C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva