#173A4A#173A4A

#173A4A is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.0% C 0.049 H 230.6°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#173A4A
RGB	rgb(23, 58, 74)
HSL	hsl(199, 53%, 19%)
HSV	hsv(199, 69%, 29%)
CMYK	cmyk(68.9%, 21.6%, 0%, 71%)
CIE-LAB	lab(22.66, -6.86, -13.57)
CIE-LCH	lch(22.66, 15.21, 243.18°)
OKLab	oklab(33.04% -0.0312 -0.0379)
OKLCH	oklch(33.04% 0.049 230.6)
XYZ	xyz(3.1020, 3.7024, 7.0284)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A4A #4A2717

analogous

#174A41 #173A4A #17214A

triadic

#173A4A #4A173A #3A4A17

tetradic

#173A4A #41174A #4A2717 #214A17

square

#173A4A #41174A #4A2717 #214A17

split-complementary

#173A4A #4A1721 #4A4117

monochromatic

#071217 #08151B #173A4A #265F79 #3483A7

Accessibility & contrast

On white

12.06

#173A4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#173A4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A4A

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A4A	#FFFFFF	#000000	##FFFFFF
##173A4A	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32394B

Deuteranopia (green-blind)

#2B344A

Tritanopia (blue-blind)

#003E3F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173a4a;
/* rgb */ color: rgb(23, 58, 74);
/* oklch */ color: oklch(33.0% 0.049 230.6);

Tailwind

colors: {
  custom: {
    50: '#5a707c',
    500: '#173a4a',
    950: '#000000',
  },
}

SCSS

$custom: #173a4a;
$custom-light: #5a707c;
$custom-dark: #000000;

JSON

{
  "hex": "#173a4a",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 74
  },
  "hsl": {
    "h": 198.824,
    "s": 52.577,
    "l": 19.02
  },
  "oklch": {
    "l": 0.3304,
    "c": 0.04911,
    "h": 230.6
  },
  "luminance": 0.03703
}

Semantic roles & 50–950 ramp

primary

#173A4A

secondary

#81513C

accent

#794CDC

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #173A4A

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

Preview Lab → · Contrast checker → · Palette generator →