#173F4C#173F4C

#173F4C is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.5% C 0.050 H 222.5°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#173F4C
RGB	rgb(23, 63, 76)
HSL	hsl(195, 54%, 19%)
HSV	hsv(195, 70%, 30%)
CMYK	cmyk(69.7%, 17.1%, 0%, 70.2%)
CIE-LAB	lab(24.51, -9.30, -12.06)
CIE-LCH	lch(24.51, 15.23, 232.36°)
OKLab	oklab(34.54% -0.0366 -0.0336)
OKLCH	oklch(34.54% 0.05 222.5)
XYZ	xyz(3.4348, 4.2586, 7.4771)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F4C #4C2417

analogous

#174C3F #173F4C #17254C

triadic

#173F4C #4C173F #3F4C17

tetradic

#173F4C #3F174C #4C2417 #254C17

square

#173F4C #3F174C #4C2417 #254C17

split-complementary

#173F4C #4C1725 #4C3F17

monochromatic

#071317 #09181D #173F4C #25667B #338DAA

Accessibility & contrast

On white

11.34

#173F4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173F4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F4C

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F4C	#FFFFFF	#000000	##FFFFFF
##173F4C	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373D4D

Deuteranopia (green-blind)

#30384C

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173f4c;
/* rgb */ color: rgb(23, 63, 76);
/* oklch */ color: oklch(34.5% 0.050 222.5);

Tailwind

colors: {
  custom: {
    50: '#5b747e',
    500: '#173f4c',
    950: '#000000',
  },
}

SCSS

$custom: #173f4c;
$custom-light: #5b747e;
$custom-dark: #000000;

JSON

{
  "hex": "#173f4c",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 76
  },
  "hsl": {
    "h": 194.717,
    "s": 53.535,
    "l": 19.412
  },
  "oklch": {
    "l": 0.34544,
    "c": 0.04971,
    "h": 222.5
  },
  "luminance": 0.04259
}

Semantic roles & 50–950 ramp

primary

#173F4C

secondary

#834D3C

accent

#6F4BDD

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #173F4C

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

Preview Lab → · Contrast checker → · Palette generator →