#173C4B#173C4B

#173C4B is a dark, muted cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.049 H 227.6°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#173C4B
RGB	rgb(23, 60, 75)
HSL	hsl(197, 53%, 19%)
HSV	hsv(197, 69%, 29%)
CMYK	cmyk(69.3%, 20%, 0%, 70.6%)
CIE-LAB	lab(23.41, -7.77, -13.08)
CIE-LCH	lch(23.41, 15.22, 239.29°)
OKLab	oklab(33.65% -0.0333 -0.0365)
OKLCH	oklch(33.65% 0.049 227.6)
XYZ	xyz(3.2387, 3.9215, 7.2415)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C4B #4B2617

analogous

#174B40 #173C4B #17224B

triadic

#173C4B #4B173C #3C4B17

tetradic

#173C4B #40174B #4B2617 #224B17

square

#173C4B #40174B #4B2617 #224B17

split-complementary

#173C4B #4B1722 #4B4017

monochromatic

#071317 #09171C #173C4B #25617A #3487A9

Accessibility & contrast

On white

11.77

#173C4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#173C4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C4B

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C4B	#FFFFFF	#000000	##FFFFFF
##173C4B	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343B4C

Deuteranopia (green-blind)

#2D354B

Tritanopia (blue-blind)

#004041

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173c4b;
/* rgb */ color: rgb(23, 60, 75);
/* oklch */ color: oklch(33.7% 0.049 227.6);

Tailwind

colors: {
  custom: {
    50: '#5b717d',
    500: '#173c4b',
    950: '#000000',
  },
}

SCSS

$custom: #173c4b;
$custom-light: #5b717d;
$custom-dark: #000000;

JSON

{
  "hex": "#173c4b",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 75
  },
  "hsl": {
    "h": 197.308,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.33652,
    "c": 0.04942,
    "h": 227.6
  },
  "luminance": 0.03922
}

Semantic roles & 50–950 ramp

primary

#173C4B

secondary

#82503C

accent

#754BDC

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #173C4B

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

Preview Lab → · Contrast checker → · Palette generator →