#173E4B#173E4B

#173E4B is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.049 H 223.0°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#173E4B
RGB	rgb(23, 62, 75)
HSL	hsl(195, 53%, 19%)
HSV	hsv(195, 69%, 29%)
CMYK	cmyk(69.3%, 17.3%, 0%, 70.6%)
CIE-LAB	lab(24.11, -9.04, -12.00)
CIE-LCH	lch(24.11, 15.03, 233.02°)
OKLab	oklab(34.21% -0.0358 -0.0334)
OKLCH	oklch(34.21% 0.049 223)
XYZ	xyz(3.3455, 4.1351, 7.2771)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E4B #4B2417

analogous

#174B3E #173E4B #17244B

triadic

#173E4B #4B173E #3E4B17

tetradic

#173E4B #3E174B #4B2417 #244B17

square

#173E4B #3E174B #4B2417 #244B17

split-complementary

#173E4B #4B1724 #4B3E17

monochromatic

#071317 #09171C #173E4B #25657A #348BA9

Accessibility & contrast

On white

11.49

#173E4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#173E4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E4B

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E4B	#FFFFFF	#000000	##FFFFFF
##173E4B	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373C4C

Deuteranopia (green-blind)

#2F374B

Tritanopia (blue-blind)

#004242

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173e4b;
/* rgb */ color: rgb(23, 62, 75);
/* oklch */ color: oklch(34.2% 0.049 223.0);

Tailwind

colors: {
  custom: {
    50: '#5b737d',
    500: '#173e4b',
    950: '#000000',
  },
}

SCSS

$custom: #173e4b;
$custom-light: #5b737d;
$custom-dark: #000000;

JSON

{
  "hex": "#173e4b",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 75
  },
  "hsl": {
    "h": 195,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.34213,
    "c": 0.04902,
    "h": 223
  },
  "luminance": 0.04135
}

Semantic roles & 50–950 ramp

primary

#173E4B

secondary

#824D3C

accent

#704BDC

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #173E4B

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

Preview Lab → · Contrast checker → · Palette generator →