#173D4F#173D4F

#173D4F is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.1% C 0.053 H 231.8°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#173D4F
RGB	rgb(23, 61, 79)
HSL	hsl(199, 55%, 20%)
HSV	hsv(199, 71%, 31%)
CMYK	cmyk(70.9%, 22.8%, 0%, 69%)
CIE-LAB	lab(23.95, -6.91, -14.90)
CIE-LCH	lch(23.95, 16.43, 245.13°)
OKLab	oklab(34.14% -0.0328 -0.0417)
OKLCH	oklch(34.14% 0.053 231.8)
XYZ	xyz(3.4328, 4.0838, 8.0030)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D4F #4F2917

analogous

#174F45 #173D4F #17214F

triadic

#173D4F #4F173D #3D4F17

tetradic

#173D4F #45174F #4F2917 #214F17

square

#173D4F #45174F #4F2917 #214F17

split-complementary

#173D4F #4F1721 #4F4517

monochromatic

#071218 #091820 #173D4F #25627E #3386AE

Accessibility & contrast

On white

11.56

#173D4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#173D4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D4F

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D4F	#FFFFFF	#000000	##FFFFFF
##173D4F	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343C50

Deuteranopia (green-blind)

#2C364F

Tritanopia (blue-blind)

#004243

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173d4f;
/* rgb */ color: rgb(23, 61, 79);
/* oklch */ color: oklch(34.1% 0.053 231.8);

Tailwind

colors: {
  custom: {
    50: '#5b7280',
    500: '#173d4f',
    950: '#000000',
  },
}

SCSS

$custom: #173d4f;
$custom-light: #5b7280;
$custom-dark: #000000;

JSON

{
  "hex": "#173d4f",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 79
  },
  "hsl": {
    "h": 199.286,
    "s": 54.902,
    "l": 20
  },
  "oklch": {
    "l": 0.34141,
    "c": 0.0531,
    "h": 231.8
  },
  "luminance": 0.04084
}

Semantic roles & 50–950 ramp

primary

#173D4F

secondary

#86543C

accent

#794ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173D4F

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

Preview Lab → · Contrast checker → · Palette generator →