#173855#173855

#173855 is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.1% C 0.064 H 247.7°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#173855
RGB	rgb(23, 56, 85)
HSL	hsl(208, 57%, 21%)
HSV	hsv(208, 73%, 33%)
CMYK	cmyk(72.9%, 34.1%, 0%, 66.7%)
CIE-LAB	lab(22.54, -1.25, -21.07)
CIE-LCH	lch(22.54, 21.11, 266.62°)
OKLab	oklab(33.13% -0.0245 -0.0596)
OKLCH	oklch(33.13% 0.064 247.7)
XYZ	xyz(3.4066, 3.6660, 9.1207)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173855 #553417

analogous

#175553 #173855 #171955

triadic

#173855 #551738 #385517

tetradic

#173855 #531755 #553417 #195517

square

#173855 #531755 #553417 #195517

split-complementary

#173855 #551719 #555317

monochromatic

#071018 #0A1825 #173855 #245885 #3177B5

Accessibility & contrast

On white

12.12

#173855 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#173855 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173855

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173855	#FFFFFF	#000000	##FFFFFF
##173855	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3956

Deuteranopia (green-blind)

#233354

Tritanopia (blue-blind)

#003F42

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173855;
/* rgb */ color: rgb(23, 56, 85);
/* oklch */ color: oklch(33.1% 0.064 247.7);

Tailwind

colors: {
  custom: {
    50: '#5c6e85',
    500: '#173855',
    950: '#000000',
  },
}

SCSS

$custom: #173855;
$custom-light: #5c6e85;
$custom-dark: #000000;

JSON

{
  "hex": "#173855",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 85
  },
  "hsl": {
    "h": 208.065,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.33125,
    "c": 0.06442,
    "h": 247.7
  },
  "luminance": 0.03666
}

Semantic roles & 50–950 ramp

primary

#173855

secondary

#8C613C

accent

#8F47E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #173855

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

Preview Lab → · Contrast checker → · Palette generator →