#173B4A#173B4A

#173B4A is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.3% C 0.049 H 228.2°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#173B4A
RGB	rgb(23, 59, 74)
HSL	hsl(198, 53%, 19%)
HSV	hsv(198, 69%, 29%)
CMYK	cmyk(68.9%, 20.3%, 0%, 71%)
CIE-LAB	lab(23.01, -7.51, -13.03)
CIE-LCH	lch(23.01, 15.04, 240.05°)
OKLab	oklab(33.32% -0.0325 -0.0364)
OKLCH	oklch(33.32% 0.049 228.2)
XYZ	xyz(3.1529, 3.8042, 7.0454)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B4A #4A2617

analogous

#174A40 #173B4A #17224A

triadic

#173B4A #4A173B #3B4A17

tetradic

#173B4A #40174A #4A2617 #224A17

square

#173B4A #40174A #4A2617 #224A17

split-complementary

#173B4A #4A1722 #4A4017

monochromatic

#071317 #08161B #173B4A #266079 #3485A7

Accessibility & contrast

On white

11.93

#173B4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#173B4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B4A

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B4A	#FFFFFF	#000000	##FFFFFF
##173B4A	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333A4B

Deuteranopia (green-blind)

#2C354A

Tritanopia (blue-blind)

#003F40

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173b4a;
/* rgb */ color: rgb(23, 59, 74);
/* oklch */ color: oklch(33.3% 0.049 228.2);

Tailwind

colors: {
  custom: {
    50: '#5a717c',
    500: '#173b4a',
    950: '#000000',
  },
}

SCSS

$custom: #173b4a;
$custom-light: #5a717c;
$custom-dark: #000000;

JSON

{
  "hex": "#173b4a",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 74
  },
  "hsl": {
    "h": 197.647,
    "s": 52.577,
    "l": 19.02
  },
  "oklch": {
    "l": 0.3332,
    "c": 0.04876,
    "h": 228.2
  },
  "luminance": 0.03805
}

Semantic roles & 50–950 ramp

primary

#173B4A

secondary

#81503C

accent

#764CDC

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #173B4A

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

Preview Lab → · Contrast checker → · Palette generator →