#173F4D#173F4D

#173F4D is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.051 H 224.3°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#173F4D
RGB	rgb(23, 63, 77)
HSL	hsl(196, 54%, 20%)
HSV	hsv(196, 70%, 30%)
CMYK	cmyk(70.1%, 18.2%, 0%, 69.8%)
CIE-LAB	lab(24.55, -8.93, -12.65)
CIE-LCH	lch(24.55, 15.48, 234.78°)
OKLab	oklab(34.6% -0.0362 -0.0353)
OKLCH	oklch(34.6% 0.051 224.3)
XYZ	xyz(3.4699, 4.2726, 7.6616)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F4D #4D2517

analogous

#174D40 #173F4D #17244D

triadic

#173F4D #4D173F #3F4D17

tetradic

#173F4D #40174D #4D2517 #244D17

square

#173F4D #40174D #4D2517 #244D17

split-complementary

#173F4D #4D1724 #4D4017

monochromatic

#071318 #09181E #173F4D #25667C #338CAB

Accessibility & contrast

On white

11.32

#173F4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173F4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F4D

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F4D	#FFFFFF	#000000	##FFFFFF
##173F4D	1.00	11.32	1.85	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373E4E

Deuteranopia (green-blind)

#30384D

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173f4d;
/* rgb */ color: rgb(23, 63, 77);
/* oklch */ color: oklch(34.6% 0.051 224.3);

Tailwind

colors: {
  custom: {
    50: '#5b747e',
    500: '#173f4d',
    950: '#000000',
  },
}

SCSS

$custom: #173f4d;
$custom-light: #5b747e;
$custom-dark: #000000;

JSON

{
  "hex": "#173f4d",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 77
  },
  "hsl": {
    "h": 195.556,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.34595,
    "c": 0.05054,
    "h": 224.3
  },
  "luminance": 0.04273
}

Semantic roles & 50–950 ramp

primary

#173F4D

secondary

#844E3C

accent

#714ADD

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173F4D

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

Preview Lab → · Contrast checker → · Palette generator →