#173555#173555

#173555 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.3% C 0.068 H 252.0°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#173555
RGB	rgb(23, 53, 85)
HSL	hsl(211, 57%, 21%)
HSV	hsv(211, 73%, 33%)
CMYK	cmyk(72.9%, 37.6%, 0%, 66.7%)
CIE-LAB	lab(21.52, 0.82, -22.67)
CIE-LCH	lch(21.52, 22.68, 272.07°)
OKLab	oklab(32.33% -0.0209 -0.0643)
OKLCH	oklch(32.33% 0.068 252)
XYZ	xyz(3.2655, 3.3839, 9.0736)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173555 #553717

analogous

#175455 #173555 #181755

triadic

#173555 #551735 #355517

tetradic

#173555 #551754 #553717 #175518

square

#173555 #551754 #553717 #175518

split-complementary

#173555 #551817 #545517

monochromatic

#070F18 #0A1725 #173555 #245385 #3171B5

Accessibility & contrast

On white

12.52

#173555 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#173555 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173555

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173555	#FFFFFF	#000000	##FFFFFF
##173555	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273756

Deuteranopia (green-blind)

#1E3154

Tritanopia (blue-blind)

#003C41

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173555;
/* rgb */ color: rgb(23, 53, 85);
/* oklch */ color: oklch(32.3% 0.068 252.0);

Tailwind

colors: {
  custom: {
    50: '#5c6b85',
    500: '#173555',
    950: '#000000',
  },
}

SCSS

$custom: #173555;
$custom-light: #5c6b85;
$custom-dark: #000000;

JSON

{
  "hex": "#173555",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 85
  },
  "hsl": {
    "h": 210.968,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.32328,
    "c": 0.06762,
    "h": 252
  },
  "luminance": 0.03384
}

Semantic roles & 50–950 ramp

primary

#173555

secondary

#8C653C

accent

#9647E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173555

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

Preview Lab → · Contrast checker → · Palette generator →