#173C4F#173C4F

#173C4F is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.054 H 233.9°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#173C4F
RGB	rgb(23, 60, 79)
HSL	hsl(200, 55%, 20%)
HSV	hsv(200, 71%, 31%)
CMYK	cmyk(70.9%, 24.1%, 0%, 69%)
CIE-LAB	lab(23.60, -6.26, -15.44)
CIE-LCH	lch(23.60, 16.66, 247.93°)
OKLab	oklab(33.86% -0.0316 -0.0433)
OKLCH	oklch(33.86% 0.054 233.9)
XYZ	xyz(3.3799, 3.9780, 7.9853)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C4F #4F2A17

analogous

#174F46 #173C4F #17204F

triadic

#173C4F #4F173C #3C4F17

tetradic

#173C4F #46174F #4F2A17 #204F17

square

#173C4F #46174F #4F2A17 #204F17

split-complementary

#173C4F #4F1720 #4F4617

monochromatic

#071218 #091820 #173C4F #25607E #3384AE

Accessibility & contrast

On white

11.70

#173C4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#173C4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C4F

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C4F	#FFFFFF	#000000	##FFFFFF
##173C4F	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333B50

Deuteranopia (green-blind)

#2B364F

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173c4f;
/* rgb */ color: rgb(23, 60, 79);
/* oklch */ color: oklch(33.9% 0.054 233.9);

Tailwind

colors: {
  custom: {
    50: '#5b7180',
    500: '#173c4f',
    950: '#000000',
  },
}

SCSS

$custom: #173c4f;
$custom-light: #5b7180;
$custom-dark: #000000;

JSON

{
  "hex": "#173c4f",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 79
  },
  "hsl": {
    "h": 200.357,
    "s": 54.902,
    "l": 20
  },
  "oklch": {
    "l": 0.33864,
    "c": 0.05358,
    "h": 233.9
  },
  "luminance": 0.03978
}

Semantic roles & 50–950 ramp

primary

#173C4F

secondary

#86553C

accent

#7C4ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173C4F

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

Preview Lab → · Contrast checker → · Palette generator →