#173238#173238

#173238 is a dark, muted cyan. Relative luminance 0.027; OKLCH L 29.9% C 0.035 H 213.9°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#173238
RGB	rgb(23, 50, 56)
HSL	hsl(191, 42%, 15%)
HSV	hsv(191, 59%, 22%)
CMYK	cmyk(58.9%, 10.7%, 0%, 78%)
CIE-LAB	lab(19.01, -8.24, -6.97)
CIE-LCH	lch(19.01, 10.80, 220.24°)
OKLab	oklab(29.86% -0.0287 -0.0193)
OKLCH	oklch(29.86% 0.035 213.9)
XYZ	xyz(2.2075, 2.7487, 4.1548)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173238 #381D17

analogous

#17382D #173238 #172138

triadic

#173238 #381732 #323817

tetradic

#173238 #2D1738 #381D17 #213817

square

#173238 #2D1738 #381D17 #213817

split-complementary

#173238 #381721 #382D17

monochromatic

#091316 #091316 #173238 #295963 #3B7F8F

Accessibility & contrast

On white

13.55

#173238 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#173238 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173238

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173238	#FFFFFF	#000000	##FFFFFF
##173238	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3038

Deuteranopia (green-blind)

#282D38

Tritanopia (blue-blind)

#043434

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #173238;
/* rgb */ color: rgb(23, 50, 56);
/* oklch */ color: oklch(29.9% 0.035 213.9);

Tailwind

colors: {
  custom: {
    50: '#57696e',
    500: '#173238',
    950: '#000000',
  },
}

SCSS

$custom: #173238;
$custom-light: #57696e;
$custom-dark: #000000;

JSON

{
  "hex": "#173238",
  "rgb": {
    "r": 23,
    "g": 50,
    "b": 56
  },
  "hsl": {
    "h": 190.909,
    "s": 41.772,
    "l": 15.49
  },
  "oklch": {
    "l": 0.29858,
    "c": 0.03459,
    "h": 213.9
  },
  "luminance": 0.02749
}

Semantic roles & 50–950 ramp

primary

#173238

secondary

#6E463C

accent

#6D56D2

background

#F5F6F6

surface

#E9EBEB

border

#C5C6C6

text

#030607

muted

#787A7A

Preview Lab

Preview with #173238

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

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