#17578F#17578F

#17578F is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.7% C 0.111 H 249.7°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX#17578F
RGBrgb(23, 87, 143)
HSLhsl(208, 72%, 33%)
HSVhsv(208, 84%, 56%)
CMYKcmyk(83.9%, 39.2%, 0%, 43.9%)
CIE-LABlab(35.95, 1.58, -36.48)
CIE-LCHlch(35.95, 36.52, 272.48°)
OKLaboklab(44.75% -0.0385 -0.1042)
OKLCHoklch(44.75% 0.111 249.7)
XYZxyz(8.7176, 8.9806, 27.2553)
Luminance0.0898 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#17578F #8F4F17
analogous
#178F8B #17578F #171B8F
triadic
#17578F #8F1757 #578F17
tetradic
#17578F #8B178F #8F4F17 #1B8F17
square
#17578F #8B178F #8F4F17 #1B8F17
split-complementary
#17578F #8F171B #8F8B17
monochromatic
#061726 #0F375A #17578F #1F77C4 #4096E0

Accessibility & contrast

On white

7.51
#17578F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.80
#17578F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17578F
7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##17578F#FFFFFF#000000##FFFFFF
##17578F1.007.512.807.51
#FFFFFF7.511.0021.001.00
#0000002.8021.001.0021.00
##FFFFFF7.511.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3C5A91
Deuteranopia (green-blind)
#29508E
Tritanopia (blue-blind)
#00646C
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #17578f;
/* rgb */ color: rgb(23, 87, 143);
/* oklch */ color: oklch(44.7% 0.111 249.7);
Tailwind
colors: {
  custom: {
    50: '#6a86b0',
    500: '#17578f',
    950: '#000000',
  },
}
SCSS
$custom: #17578f;
$custom-light: #6a86b0;
$custom-dark: #000000;
JSON
{
  "hex": "#17578f",
  "rgb": {
    "r": 23,
    "g": 87,
    "b": 143
  },
  "hsl": {
    "h": 208,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.44747,
    "c": 0.11106,
    "h": 249.7
  },
  "luminance": 0.08982
}

Semantic roles & 50–950 ramp

primary
#17578F
secondary
#C17D41
accent
#8E39EF
background
#F6F8FA
surface
#ECEFF5
border
#C7CACF
text
#070B10
muted
#7A7C7F

Preview Lab

Preview with #17578F

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

Preview Lab → · Contrast checker → · Palette generator →

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