#173B4C#173B4C

#173B4C is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.4% C 0.051 H 231.5°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#173B4C
RGB	rgb(23, 59, 76)
HSL	hsl(199, 54%, 19%)
HSV	hsv(199, 70%, 30%)
CMYK	cmyk(69.7%, 22.4%, 0%, 70.2%)
CIE-LAB	lab(23.11, -6.76, -14.21)
CIE-LCH	lch(23.11, 15.74, 244.58°)
OKLab	oklab(33.42% -0.0316 -0.0398)
OKLCH	oklch(33.42% 0.051 231.5)
XYZ	xyz(3.2213, 3.8316, 7.4059)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B4C #4C2817

analogous

#174C43 #173B4C #17214C

triadic

#173B4C #4C173B #3B4C17

tetradic

#173B4C #43174C #4C2817 #214C17

square

#173B4C #43174C #4C2817 #214C17

split-complementary

#173B4C #4C1721 #4C4317

monochromatic

#071217 #09171D #173B4C #255F7B #3384AA

Accessibility & contrast

On white

11.89

#173B4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#173B4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B4C

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B4C	#FFFFFF	#000000	##FFFFFF
##173B4C	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333A4D

Deuteranopia (green-blind)

#2B354C

Tritanopia (blue-blind)

#004041

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #173b4c;
/* rgb */ color: rgb(23, 59, 76);
/* oklch */ color: oklch(33.4% 0.051 231.5);

Tailwind

colors: {
  custom: {
    50: '#5b707e',
    500: '#173b4c',
    950: '#000000',
  },
}

SCSS

$custom: #173b4c;
$custom-light: #5b707e;
$custom-dark: #000000;

JSON

{
  "hex": "#173b4c",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 76
  },
  "hsl": {
    "h": 199.245,
    "s": 53.535,
    "l": 19.412
  },
  "oklch": {
    "l": 0.33425,
    "c": 0.05079,
    "h": 231.5
  },
  "luminance": 0.03832
}

Semantic roles & 50–950 ramp

primary

#173B4C

secondary

#83533C

accent

#7A4BDD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #173B4C

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

Preview Lab → · Contrast checker → · Palette generator →