#173E4E#173E4E

#173E4E is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.4% C 0.052 H 228.1°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#173E4E
RGB	rgb(23, 62, 78)
HSL	hsl(197, 54%, 20%)
HSV	hsv(197, 71%, 31%)
CMYK	cmyk(70.5%, 20.5%, 0%, 69.4%)
CIE-LAB	lab(24.25, -7.92, -13.78)
CIE-LCH	lch(24.25, 15.89, 240.09°)
OKLab	oklab(34.37% -0.0345 -0.0385)
OKLCH	oklch(34.37% 0.052 228.1)
XYZ	xyz(3.4506, 4.1771, 7.8307)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E4E #4E2717

analogous

#174E43 #173E4E #17224E

triadic

#173E4E #4E173E #3E4E17

tetradic

#173E4E #43174E #4E2717 #224E17

square

#173E4E #43174E #4E2717 #224E17

split-complementary

#173E4E #4E1722 #4E4317

monochromatic

#071318 #09181F #173E4E #25647D #3389AD

Accessibility & contrast

On white

11.44

#173E4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173E4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E4E

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E4E	#FFFFFF	#000000	##FFFFFF
##173E4E	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363D4F

Deuteranopia (green-blind)

#2E374E

Tritanopia (blue-blind)

#004343

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173e4e;
/* rgb */ color: rgb(23, 62, 78);
/* oklch */ color: oklch(34.4% 0.052 228.1);

Tailwind

colors: {
  custom: {
    50: '#5b737f',
    500: '#173e4e',
    950: '#000000',
  },
}

SCSS

$custom: #173e4e;
$custom-light: #5b737f;
$custom-dark: #000000;

JSON

{
  "hex": "#173e4e",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 78
  },
  "hsl": {
    "h": 197.455,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.34366,
    "c": 0.0517,
    "h": 228.1
  },
  "luminance": 0.04177
}

Semantic roles & 50–950 ramp

primary

#173E4E

secondary

#85513C

accent

#754ADE

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #173E4E

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

Preview Lab → · Contrast checker → · Palette generator →