#173D4E#173D4E

#173D4E is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.1% C 0.052 H 230.3°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#173D4E
RGB	rgb(23, 61, 78)
HSL	hsl(199, 54%, 20%)
HSV	hsv(199, 71%, 31%)
CMYK	cmyk(70.5%, 21.8%, 0%, 69.4%)
CIE-LAB	lab(23.90, -7.29, -14.32)
CIE-LCH	lch(23.90, 16.06, 243.02°)
OKLab	oklab(34.09% -0.0332 -0.04)
OKLCH	oklch(34.09% 0.052 230.3)
XYZ	xyz(3.3967, 4.0694, 7.8127)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D4E #4E2817

analogous

#174E43 #173D4E #17224E

triadic

#173D4E #4E173D #3D4E17

tetradic

#173D4E #43174E #4E2817 #224E17

square

#173D4E #43174E #4E2817 #224E17

split-complementary

#173D4E #4E1722 #4E4317

monochromatic

#071218 #09181F #173D4E #25627D #3387AD

Accessibility & contrast

On white

11.58

#173D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D4E

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D4E	#FFFFFF	#000000	##FFFFFF
##173D4E	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343C4F

Deuteranopia (green-blind)

#2D364E

Tritanopia (blue-blind)

#004243

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173d4e;
/* rgb */ color: rgb(23, 61, 78);
/* oklch */ color: oklch(34.1% 0.052 230.3);

Tailwind

colors: {
  custom: {
    50: '#5b727f',
    500: '#173d4e',
    950: '#000000',
  },
}

SCSS

$custom: #173d4e;
$custom-light: #5b727f;
$custom-dark: #000000;

JSON

{
  "hex": "#173d4e",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 78
  },
  "hsl": {
    "h": 198.545,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.34088,
    "c": 0.05205,
    "h": 230.3
  },
  "luminance": 0.0407
}

Semantic roles & 50–950 ramp

primary

#173D4E

secondary

#85523C

accent

#784ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173D4E

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

Preview Lab → · Contrast checker → · Palette generator →