#173C54#173C54

#173C54 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.1% C 0.060 H 240.2°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#173C54
RGB	rgb(23, 60, 84)
HSL	hsl(204, 57%, 21%)
HSV	hsv(204, 73%, 33%)
CMYK	cmyk(72.6%, 28.6%, 0%, 67.1%)
CIE-LAB	lab(23.85, -4.33, -18.35)
CIE-LCH	lch(23.85, 18.86, 256.73°)
OKLab	oklab(34.14% -0.0296 -0.0517)
OKLCH	oklch(34.14% 0.06 240.2)
XYZ	xyz(3.5688, 4.0536, 8.9801)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C54 #542F17

analogous

#17544D #173C54 #171D54

triadic

#173C54 #54173C #3C5417

tetradic

#173C54 #4D1754 #542F17 #1D5417

square

#173C54 #4D1754 #542F17 #1D5417

split-complementary

#173C54 #54171D #544D17

monochromatic

#071118 #0A1A24 #173C54 #245E84 #3181B4

Accessibility & contrast

On white

11.60

#173C54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173C54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C54

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C54	#FFFFFF	#000000	##FFFFFF
##173C54	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313C55

Deuteranopia (green-blind)

#293654

Tritanopia (blue-blind)

#004244

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173c54;
/* rgb */ color: rgb(23, 60, 84);
/* oklch */ color: oklch(34.1% 0.060 240.2);

Tailwind

colors: {
  custom: {
    50: '#5c7184',
    500: '#173c54',
    950: '#000000',
  },
}

SCSS

$custom: #173c54;
$custom-light: #5c7184;
$custom-dark: #000000;

JSON

{
  "hex": "#173c54",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 84
  },
  "hsl": {
    "h": 203.607,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34144,
    "c": 0.05955,
    "h": 240.2
  },
  "luminance": 0.04054
}

Semantic roles & 50–950 ramp

primary

#173C54

secondary

#8B5B3C

accent

#8448E0

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #173C54

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

Preview Lab → · Contrast checker → · Palette generator →