#17578D#17578D

#17578D is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.6% C 0.108 H 248.9°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX#17578D
RGBrgb(23, 87, 141)
HSLhsl(207, 72%, 32%)
HSVhsv(207, 84%, 55%)
CMYKcmyk(83.7%, 38.3%, 0%, 44.7%)
CIE-LABlab(35.83, 0.78, -35.45)
CIE-LCHlch(35.83, 35.46, 271.25°)
OKLaboklab(44.62% -0.0391 -0.1011)
OKLCHoklch(44.62% 0.108 248.9)
XYZxyz(8.5674, 8.9206, 26.4644)
Luminance0.0892 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#17578D #8D4D17
analogous
#178D88 #17578D #171C8D
triadic
#17578D #8D1757 #578D17
tetradic
#17578D #88178D #8D4D17 #1C8D17
square
#17578D #88178D #8D4D17 #1C8D17
split-complementary
#17578D #8D171C #8D8817
monochromatic
#061624 #0E3758 #17578D #2077C2 #3F96E0

Accessibility & contrast

On white

7.54
#17578D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

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

Best text color

#FFFFFF on #17578D
7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##17578D#FFFFFF#000000##FFFFFF
##17578D1.007.542.787.54
#FFFFFF7.541.0021.001.00
#0000002.7821.001.0021.00
##FFFFFF7.541.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D5A8F
Deuteranopia (green-blind)
#2B4F8C
Tritanopia (blue-blind)
#00646B
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #17578d;
/* rgb */ color: rgb(23, 87, 141);
/* oklch */ color: oklch(44.6% 0.108 248.9);
Tailwind
colors: {
  custom: {
    50: '#6986ae',
    500: '#17578d',
    950: '#000000',
  },
}
SCSS
$custom: #17578d;
$custom-light: #6986ae;
$custom-dark: #000000;
JSON
{
  "hex": "#17578d",
  "rgb": {
    "r": 23,
    "g": 87,
    "b": 141
  },
  "hsl": {
    "h": 207.458,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.44618,
    "c": 0.10842,
    "h": 248.9
  },
  "luminance": 0.08922
}

Semantic roles & 50–950 ramp

primary
#17578D
secondary
#C07A40
accent
#8C39EF
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070B10
muted
#7A7C7F

Preview Lab

Preview with #17578D

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

Preview Lab → · Contrast checker → · Palette generator →

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