#173C4D#173C4D

#173C4D is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.8% C 0.051 H 230.9°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#173C4D
RGB	rgb(23, 60, 77)
HSL	hsl(199, 54%, 20%)
HSV	hsv(199, 70%, 30%)
CMYK	cmyk(70.1%, 22.1%, 0%, 69.8%)
CIE-LAB	lab(23.50, -7.02, -14.27)
CIE-LCH	lch(23.50, 15.90, 243.79°)
OKLab	oklab(33.76% -0.0324 -0.0399)
OKLCH	oklch(33.76% 0.051 230.9)
XYZ	xyz(3.3082, 3.9494, 7.6077)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C4D #4D2817

analogous

#174D43 #173C4D #17214D

triadic

#173C4D #4D173C #3C4D17

tetradic

#173C4D #43174D #4D2817 #214D17

square

#173C4D #43174D #4D2817 #214D17

split-complementary

#173C4D #4D1721 #4D4317

monochromatic

#071218 #09171E #173C4D #25617C #3385AB

Accessibility & contrast

On white

11.73

#173C4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#173C4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C4D

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C4D	#FFFFFF	#000000	##FFFFFF
##173C4D	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333B4E

Deuteranopia (green-blind)

#2C364D

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173c4d;
/* rgb */ color: rgb(23, 60, 77);
/* oklch */ color: oklch(33.8% 0.051 230.9);

Tailwind

colors: {
  custom: {
    50: '#5b717e',
    500: '#173c4d',
    950: '#000000',
  },
}

SCSS

$custom: #173c4d;
$custom-light: #5b717e;
$custom-dark: #000000;

JSON

{
  "hex": "#173c4d",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 77
  },
  "hsl": {
    "h": 198.889,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.33757,
    "c": 0.05142,
    "h": 230.9
  },
  "luminance": 0.0395
}

Semantic roles & 50–950 ramp

primary

#173C4D

secondary

#84523C

accent

#794ADD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173C4D

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

Preview Lab → · Contrast checker → · Palette generator →