#173559#173559

#173559 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.6% C 0.074 H 254.4°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX#173559
RGBrgb(23, 53, 89)
HSLhsl(213, 59%, 22%)
HSVhsv(213, 74%, 35%)
CMYKcmyk(74.2%, 40.4%, 0%, 65.1%)
CIE-LABlab(21.76, 2.45, -24.93)
CIE-LCHlch(21.76, 25.05, 275.62°)
OKLaboklab(32.59% -0.0197 -0.0709)
OKLCHoklch(32.59% 0.074 254.4)
XYZxyz(3.4290, 3.4493, 9.9343)
Luminance0.0345 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#173559 #593B17
analogous
#175659 #173559 #1A1759
triadic
#173559 #591735 #355917
tetradic
#173559 #591756 #593B17 #17591A
square
#173559 #591756 #593B17 #17591A
split-complementary
#173559 #591A17 #565917
monochromatic
#060E18 #0A1828 #173559 #24528A #306FBA

Accessibility & contrast

On white

12.43
#173559 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.69
#173559 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173559
12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##173559#FFFFFF#000000##FFFFFF
##1735591.0012.431.6912.43
#FFFFFF12.431.0021.001.00
#0000001.6921.001.0021.00
##FFFFFF12.431.0021.001.00

Color blindness preview

Protanopia (red-blind)
#25385A
Deuteranopia (green-blind)
#1B3158
Tritanopia (blue-blind)
#003D42
Achromatopsia (no color)
#343434

Design tokens & code

CSS
--color: #173559;
/* rgb */ color: rgb(23, 53, 89);
/* oklch */ color: oklch(32.6% 0.074 254.4);
Tailwind
colors: {
  custom: {
    50: '#5d6b88',
    500: '#173559',
    950: '#000000',
  },
}
SCSS
$custom: #173559;
$custom-light: #5d6b88;
$custom-dark: #000000;
JSON
{
  "hex": "#173559",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 89
  },
  "hsl": {
    "h": 212.727,
    "s": 58.929,
    "l": 21.961
  },
  "oklch": {
    "l": 0.32594,
    "c": 0.07362,
    "h": 254.4
  },
  "luminance": 0.0345
}

Semantic roles & 50–950 ramp

primary
#173559
secondary
#906A3C
accent
#9B46E2
background
#F5F6F8
surface
#E9EBEF
border
#C5C6CA
text
#05060B
muted
#797A7C

Preview Lab

Preview with #173559

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

Preview Lab → · Contrast checker → · Palette generator →

#173559 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva