#173556#173556

#173556 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.4% C 0.069 H 252.6°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#173556
RGB	rgb(23, 53, 86)
HSL	hsl(211, 58%, 21%)
HSV	hsv(211, 73%, 34%)
CMYK	cmyk(73.3%, 38.4%, 0%, 66.3%)
CIE-LAB	lab(21.58, 1.23, -23.24)
CIE-LCH	lch(21.58, 23.27, 273.02°)
OKLab	oklab(32.39% -0.0206 -0.066)
OKLCH	oklch(32.39% 0.069 252.6)
XYZ	xyz(3.3055, 3.3999, 9.2843)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173556 #563817

analogous

#175556 #173556 #191756

triadic

#173556 #561735 #355617

tetradic

#173556 #561755 #563817 #175619

square

#173556 #561755 #563817 #175619

split-complementary

#173556 #561917 #555617

monochromatic

#060F18 #0A1726 #173556 #245386 #3171B7

Accessibility & contrast

On white

12.50

#173556 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#173556 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173556

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173556	#FFFFFF	#000000	##FFFFFF
##173556	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263757

Deuteranopia (green-blind)

#1D3155

Tritanopia (blue-blind)

#003D41

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173556;
/* rgb */ color: rgb(23, 53, 86);
/* oklch */ color: oklch(32.4% 0.069 252.6);

Tailwind

colors: {
  custom: {
    50: '#5c6b86',
    500: '#173556',
    950: '#000000',
  },
}

SCSS

$custom: #173556;
$custom-light: #5c6b86;
$custom-dark: #000000;

JSON

{
  "hex": "#173556",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 86
  },
  "hsl": {
    "h": 211.429,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32394,
    "c": 0.06911,
    "h": 252.6
  },
  "luminance": 0.034
}

Semantic roles & 50–950 ramp

primary

#173556

secondary

#8D663C

accent

#9847E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173556

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

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