#173656#173656

#173656 is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.7% C 0.068 H 251.3°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#173656
RGB	rgb(23, 54, 86)
HSL	hsl(210, 58%, 21%)
HSV	hsv(210, 73%, 34%)
CMYK	cmyk(73.3%, 37.2%, 0%, 66.3%)
CIE-LAB	lab(21.92, 0.53, -22.71)
CIE-LCH	lch(21.92, 22.71, 271.34°)
OKLab	oklab(32.66% -0.0218 -0.0644)
OKLCH	oklch(32.66% 0.068 251.3)
XYZ	xyz(3.3516, 3.4920, 9.2997)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173656 #563717

analogous

#175656 #173656 #181756

triadic

#173656 #561736 #365617

tetradic

#173656 #561756 #563717 #175618

square

#173656 #561756 #563717 #175618

split-complementary

#173656 #561817 #565617

monochromatic

#060F18 #0A1826 #173656 #245486 #3173B7

Accessibility & contrast

On white

12.36

#173656 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#173656 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173656

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173656	#FFFFFF	#000000	##FFFFFF
##173656	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283857

Deuteranopia (green-blind)

#1F3255

Tritanopia (blue-blind)

#003D42

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173656;
/* rgb */ color: rgb(23, 54, 86);
/* oklch */ color: oklch(32.7% 0.068 251.3);

Tailwind

colors: {
  custom: {
    50: '#5c6c86',
    500: '#173656',
    950: '#000000',
  },
}

SCSS

$custom: #173656;
$custom-light: #5c6c86;
$custom-dark: #000000;

JSON

{
  "hex": "#173656",
  "rgb": {
    "r": 23,
    "g": 54,
    "b": 86
  },
  "hsl": {
    "h": 210.476,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32657,
    "c": 0.06798,
    "h": 251.3
  },
  "luminance": 0.03492
}

Semantic roles & 50–950 ramp

primary

#173656

secondary

#8D653C

accent

#9547E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #173656

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

Preview Lab → · Contrast checker → · Palette generator →