#173C4E#173C4E

#173C4E is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.8% C 0.052 H 232.4°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#173C4E
RGB	rgb(23, 60, 78)
HSL	hsl(200, 54%, 20%)
HSV	hsv(200, 71%, 31%)
CMYK	cmyk(70.5%, 23.1%, 0%, 69.4%)
CIE-LAB	lab(23.55, -6.64, -14.85)
CIE-LCH	lch(23.55, 16.27, 245.91°)
OKLab	oklab(33.81% -0.032 -0.0416)
OKLCH	oklch(33.81% 0.052 232.4)
XYZ	xyz(3.3438, 3.9636, 7.7951)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C4E #4E2917

analogous

#174E44 #173C4E #17214E

triadic

#173C4E #4E173C #3C4E17

tetradic

#173C4E #44174E #4E2917 #214E17

square

#173C4E #44174E #4E2917 #214E17

split-complementary

#173C4E #4E1721 #4E4417

monochromatic

#071218 #09181F #173C4E #25607D #3385AD

Accessibility & contrast

On white

11.71

#173C4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#173C4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C4E

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C4E	#FFFFFF	#000000	##FFFFFF
##173C4E	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333B4F

Deuteranopia (green-blind)

#2B364E

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #173c4e;
/* rgb */ color: rgb(23, 60, 78);
/* oklch */ color: oklch(33.8% 0.052 232.4);

Tailwind

colors: {
  custom: {
    50: '#5b717f',
    500: '#173c4e',
    950: '#000000',
  },
}

SCSS

$custom: #173c4e;
$custom-light: #5b717f;
$custom-dark: #000000;

JSON

{
  "hex": "#173c4e",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 78
  },
  "hsl": {
    "h": 199.636,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.3381,
    "c": 0.05248,
    "h": 232.4
  },
  "luminance": 0.03964
}

Semantic roles & 50–950 ramp

primary

#173C4E

secondary

#85543C

accent

#7A4ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173C4E

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

Preview Lab → · Contrast checker → · Palette generator →