#173557#173557

#173557 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.5% C 0.071 H 253.3°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#173557
RGB	rgb(23, 53, 87)
HSL	hsl(212, 58%, 22%)
HSV	hsv(212, 74%, 34%)
CMYK	cmyk(73.6%, 39.1%, 0%, 65.9%)
CIE-LAB	lab(21.64, 1.64, -23.81)
CIE-LCH	lch(21.64, 23.86, 273.93°)
OKLab	oklab(32.46% -0.0203 -0.0676)
OKLCH	oklch(32.46% 0.071 253.3)
XYZ	xyz(3.3461, 3.4161, 9.4980)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173557 #573917

analogous

#175557 #173557 #191757

triadic

#173557 #571735 #355717

tetradic

#173557 #571755 #573917 #175719

square

#173557 #571755 #573917 #175719

split-complementary

#173557 #571917 #555717

monochromatic

#060F18 #0A1827 #173557 #245287 #3170B8

Accessibility & contrast

On white

12.48

#173557 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#173557 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173557

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173557	#FFFFFF	#000000	##FFFFFF
##173557	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263758

Deuteranopia (green-blind)

#1D3156

Tritanopia (blue-blind)

#003D41

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173557;
/* rgb */ color: rgb(23, 53, 87);
/* oklch */ color: oklch(32.5% 0.071 253.3);

Tailwind

colors: {
  custom: {
    50: '#5d6b86',
    500: '#173557',
    950: '#000000',
  },
}

SCSS

$custom: #173557;
$custom-light: #5d6b86;
$custom-dark: #000000;

JSON

{
  "hex": "#173557",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 87
  },
  "hsl": {
    "h": 211.875,
    "s": 58.182,
    "l": 21.569
  },
  "oklch": {
    "l": 0.3246,
    "c": 0.07061,
    "h": 253.3
  },
  "luminance": 0.03416
}

Semantic roles & 50–950 ramp

primary

#173557

secondary

#8E673C

accent

#9946E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173557

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

Preview Lab → · Contrast checker → · Palette generator →