#173A4E#173A4E

#173A4E is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.3% C 0.054 H 236.6°. Best body text is #FFFFFF at 11.99:1 contrast (WCAG AA passes).

Color values

HEX	#173A4E
RGB	rgb(23, 58, 78)
HSL	hsl(202, 54%, 20%)
HSV	hsv(202, 71%, 31%)
CMYK	cmyk(70.5%, 25.6%, 0%, 69.4%)
CIE-LAB	lab(22.85, -5.34, -15.93)
CIE-LCH	lch(22.85, 16.80, 251.47°)
OKLab	oklab(33.26% -0.0295 -0.0447)
OKLCH	oklch(33.26% 0.054 236.6)
XYZ	xyz(3.2410, 3.7580, 7.7608)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A4E #4E2B17

analogous

#174E46 #173A4E #171F4E

triadic

#173A4E #4E173A #3A4E17

tetradic

#173A4E #46174E #4E2B17 #1F4E17

square

#173A4E #46174E #4E2B17 #1F4E17

split-complementary

#173A4E #4E171F #4E4617

monochromatic

#071218 #09171F #173A4E #255D7D #3380AD

Accessibility & contrast

On white

11.99

#173A4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#173A4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A4E

11.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A4E	#FFFFFF	#000000	##FFFFFF
##173A4E	1.00	11.99	1.75	11.99
#FFFFFF	11.99	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313A4F

Deuteranopia (green-blind)

#29344E

Tritanopia (blue-blind)

#003F41

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173a4e;
/* rgb */ color: rgb(23, 58, 78);
/* oklch */ color: oklch(33.3% 0.054 236.6);

Tailwind

colors: {
  custom: {
    50: '#5b707f',
    500: '#173a4e',
    950: '#000000',
  },
}

SCSS

$custom: #173a4e;
$custom-light: #5b707f;
$custom-dark: #000000;

JSON

{
  "hex": "#173a4e",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 78
  },
  "hsl": {
    "h": 201.818,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.33257,
    "c": 0.05357,
    "h": 236.6
  },
  "luminance": 0.03758
}

Semantic roles & 50–950 ramp

primary

#173A4E

secondary

#85563C

accent

#804ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173A4E

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

Preview Lab → · Contrast checker → · Palette generator →