#173B4D#173B4D

#173B4D is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.5% C 0.052 H 233.1°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX#173B4D
RGBrgb(23, 59, 77)
HSLhsl(200, 54%, 20%)
HSVhsv(200, 70%, 30%)
CMYKcmyk(70.1%, 23.4%, 0%, 69.8%)
CIE-LABlab(23.15, -6.38, -14.80)
CIE-LCHlch(23.15, 16.12, 246.70°)
OKLaboklab(33.48% -0.0312 -0.0415)
OKLCHoklch(33.48% 0.052 233.1)
XYZxyz(3.2563, 3.8456, 7.5904)
Luminance0.0385 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#173B4D #4D2917
analogous
#174D44 #173B4D #17204D
triadic
#173B4D #4D173B #3B4D17
tetradic
#173B4D #44174D #4D2917 #204D17
square
#173B4D #44174D #4D2917 #204D17
split-complementary
#173B4D #4D1720 #4D4417
monochromatic
#071218 #09171E #173B4D #255F7C #3383AB

Accessibility & contrast

On white

11.87
#173B4D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.77
#173B4D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B4D
11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##173B4D#FFFFFF#000000##FFFFFF
##173B4D1.0011.871.7711.87
#FFFFFF11.871.0021.001.00
#0000001.7721.001.0021.00
##FFFFFF11.871.0021.001.00

Color blindness preview

Protanopia (red-blind)
#323A4E
Deuteranopia (green-blind)
#2B354D
Tritanopia (blue-blind)
#004041
Achromatopsia (no color)
#373737

Design tokens & code

CSS
--color: #173b4d;
/* rgb */ color: rgb(23, 59, 77);
/* oklch */ color: oklch(33.5% 0.052 233.1);
Tailwind
colors: {
  custom: {
    50: '#5b707e',
    500: '#173b4d',
    950: '#000000',
  },
}
SCSS
$custom: #173b4d;
$custom-light: #5b707e;
$custom-dark: #000000;
JSON
{
  "hex": "#173b4d",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 77
  },
  "hsl": {
    "h": 200,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.33479,
    "c": 0.05188,
    "h": 233.1
  },
  "luminance": 0.03846
}

Semantic roles & 50–950 ramp

primary
#173B4D
secondary
#84543C
accent
#7B4ADD
background
#F5F6F7
surface
#E9ECEE
border
#C5C7C9
text
#04070A
muted
#797A7C

Preview Lab

Preview with #173B4D

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

Preview Lab → · Contrast checker → · Palette generator →

#173B4D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva