#173F4E#173F4E

#173F4E is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.6% C 0.051 H 226.0°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#173F4E
RGB	rgb(23, 63, 78)
HSL	hsl(196, 54%, 20%)
HSV	hsv(196, 71%, 31%)
CMYK	cmyk(70.5%, 19.2%, 0%, 69.4%)
CIE-LAB	lab(24.60, -8.56, -13.24)
CIE-LCH	lch(24.60, 15.77, 237.12°)
OKLab	oklab(34.64% -0.0357 -0.037)
OKLCH	oklch(34.64% 0.051 226)
XYZ	xyz(3.5055, 4.2869, 7.8490)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F4E #4E2617

analogous

#174E42 #173F4E #17234E

triadic

#173F4E #4E173F #3F4E17

tetradic

#173F4E #42174E #4E2617 #234E17

square

#173F4E #42174E #4E2617 #234E17

split-complementary

#173F4E #4E1723 #4E4217

monochromatic

#071318 #09191F #173F4E #25657D #338BAD

Accessibility & contrast

On white

11.31

#173F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F4E

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F4E	#FFFFFF	#000000	##FFFFFF
##173F4E	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373E4F

Deuteranopia (green-blind)

#2F384E

Tritanopia (blue-blind)

#004344

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173f4e;
/* rgb */ color: rgb(23, 63, 78);
/* oklch */ color: oklch(34.6% 0.051 226.0);

Tailwind

colors: {
  custom: {
    50: '#5b747f',
    500: '#173f4e',
    950: '#000000',
  },
}

SCSS

$custom: #173f4e;
$custom-light: #5b747f;
$custom-dark: #000000;

JSON

{
  "hex": "#173f4e",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 78
  },
  "hsl": {
    "h": 196.364,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.34645,
    "c": 0.05141,
    "h": 226
  },
  "luminance": 0.04287
}

Semantic roles & 50–950 ramp

primary

#173F4E

secondary

#85503C

accent

#724ADE

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173F4E

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

Preview Lab → · Contrast checker → · Palette generator →