#173E53#173E53

#173E53 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.057 H 235.4°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#173E53
RGB	rgb(23, 62, 83)
HSL	hsl(201, 57%, 21%)
HSV	hsv(201, 72%, 33%)
CMYK	cmyk(72.3%, 25.3%, 0%, 67.5%)
CIE-LAB	lab(24.49, -6.03, -16.70)
CIE-LCH	lch(24.49, 17.76, 250.16°)
OKLab	oklab(34.63% -0.0324 -0.0469)
OKLCH	oklch(34.63% 0.057 235.4)
XYZ	xyz(3.6367, 4.2516, 8.8109)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E53 #532C17

analogous

#17534A #173E53 #172053

triadic

#173E53 #53173E #3E5317

tetradic

#173E53 #4A1753 #532C17 #205317

square

#173E53 #4A1753 #532C17 #205317

split-complementary

#173E53 #531720 #534A17

monochromatic

#071218 #0A1A23 #173E53 #246283 #3286B3

Accessibility & contrast

On white

11.35

#173E53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173E53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E53

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E53	#FFFFFF	#000000	##FFFFFF
##173E53	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343E54

Deuteranopia (green-blind)

#2C3853

Tritanopia (blue-blind)

#004345

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173e53;
/* rgb */ color: rgb(23, 62, 83);
/* oklch */ color: oklch(34.6% 0.057 235.4);

Tailwind

colors: {
  custom: {
    50: '#5c7383',
    500: '#173e53',
    950: '#000000',
  },
}

SCSS

$custom: #173e53;
$custom-light: #5c7383;
$custom-dark: #000000;

JSON

{
  "hex": "#173e53",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 83
  },
  "hsl": {
    "h": 201,
    "s": 56.604,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34634,
    "c": 0.057,
    "h": 235.4
  },
  "luminance": 0.04252
}

Semantic roles & 50–950 ramp

primary

#173E53

secondary

#8A573C

accent

#7D48E0

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173E53

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

Preview Lab → · Contrast checker → · Palette generator →