#173E4F#173E4F

#173E4F is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.4% C 0.053 H 229.7°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#173E4F
RGB	rgb(23, 62, 79)
HSL	hsl(198, 55%, 20%)
HSV	hsv(198, 71%, 31%)
CMYK	cmyk(70.9%, 21.5%, 0%, 69%)
CIE-LAB	lab(24.30, -7.55, -14.37)
CIE-LCH	lch(24.30, 16.23, 242.28°)
OKLab	oklab(34.42% -0.0341 -0.0402)
OKLCH	oklch(34.42% 0.053 229.7)
XYZ	xyz(3.4867, 4.1916, 8.0209)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E4F #4F2817

analogous

#174F44 #173E4F #17224F

triadic

#173E4F #4F173E #3E4F17

tetradic

#173E4F #44174F #4F2817 #224F17

square

#173E4F #44174F #4F2817 #224F17

split-complementary

#173E4F #4F1722 #4F4417

monochromatic

#071318 #091920 #173E4F #25637E #3388AE

Accessibility & contrast

On white

11.42

#173E4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173E4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E4F

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E4F	#FFFFFF	#000000	##FFFFFF
##173E4F	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353D50

Deuteranopia (green-blind)

#2E374F

Tritanopia (blue-blind)

#004344

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173e4f;
/* rgb */ color: rgb(23, 62, 79);
/* oklch */ color: oklch(34.4% 0.053 229.7);

Tailwind

colors: {
  custom: {
    50: '#5b7380',
    500: '#173e4f',
    950: '#000000',
  },
}

SCSS

$custom: #173e4f;
$custom-light: #5b7380;
$custom-dark: #000000;

JSON

{
  "hex": "#173e4f",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 79
  },
  "hsl": {
    "h": 198.214,
    "s": 54.902,
    "l": 20
  },
  "oklch": {
    "l": 0.34419,
    "c": 0.05268,
    "h": 229.7
  },
  "luminance": 0.04192
}

Semantic roles & 50–950 ramp

primary

#173E4F

secondary

#86523C

accent

#774ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173E4F

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

Preview Lab → · Contrast checker → · Palette generator →