#173A4D#173A4D

#173A4D is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.2% C 0.052 H 235.2°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#173A4D
RGB	rgb(23, 58, 77)
HSL	hsl(201, 54%, 20%)
HSV	hsv(201, 70%, 30%)
CMYK	cmyk(70.1%, 24.7%, 0%, 69.8%)
CIE-LAB	lab(22.81, -5.72, -15.34)
CIE-LCH	lch(22.81, 16.38, 249.54°)
OKLab	oklab(33.2% -0.0299 -0.043)
OKLCH	oklch(33.2% 0.052 235.2)
XYZ	xyz(3.2054, 3.7438, 7.5734)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A4D #4D2A17

analogous

#174D45 #173A4D #171F4D

triadic

#173A4D #4D173A #3A4D17

tetradic

#173A4D #45174D #4D2A17 #1F4D17

square

#173A4D #45174D #4D2A17 #1F4D17

split-complementary

#173A4D #4D171F #4D4517

monochromatic

#071218 #09171E #173A4D #255D7C #3381AB

Accessibility & contrast

On white

12.01

#173A4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#173A4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A4D

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A4D	#FFFFFF	#000000	##FFFFFF
##173A4D	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313A4E

Deuteranopia (green-blind)

#29344D

Tritanopia (blue-blind)

#003F40

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173a4d;
/* rgb */ color: rgb(23, 58, 77);
/* oklch */ color: oklch(33.2% 0.052 235.2);

Tailwind

colors: {
  custom: {
    50: '#5b707f',
    500: '#173a4d',
    950: '#000000',
  },
}

SCSS

$custom: #173a4d;
$custom-light: #5b707f;
$custom-dark: #000000;

JSON

{
  "hex": "#173a4d",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 77
  },
  "hsl": {
    "h": 201.111,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.33201,
    "c": 0.0524,
    "h": 235.2
  },
  "luminance": 0.03744
}

Semantic roles & 50–950 ramp

primary

#173A4D

secondary

#84553C

accent

#7E4ADD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173A4D

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

Preview Lab → · Contrast checker → · Palette generator →