#173750#173750

#173750 is a dark, muted cyan. Relative luminance 0.035; OKLCH L 32.6% C 0.058 H 244.6°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#173750
RGB	rgb(23, 55, 80)
HSL	hsl(206, 55%, 20%)
HSV	hsv(206, 71%, 31%)
CMYK	cmyk(71.2%, 31.2%, 0%, 68.6%)
CIE-LAB	lab(21.92, -2.56, -18.72)
CIE-LCH	lch(21.92, 18.89, 262.22°)
OKLab	oklab(32.55% -0.025 -0.0528)
OKLCH	oklch(32.55% 0.058 244.6)
XYZ	xyz(3.1670, 3.4934, 8.0953)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173750 #503017

analogous

#17504C #173750 #171A50

triadic

#173750 #501737 #375017

tetradic

#173750 #4C1750 #503017 #1A5017

square

#173750 #4C1750 #503017 #1A5017

split-complementary

#173750 #50171A #504C17

monochromatic

#071018 #091620 #173750 #255880 #3278AF

Accessibility & contrast

On white

12.36

#173750 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#173750 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173750

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173750	#FFFFFF	#000000	##FFFFFF
##173750	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3851

Deuteranopia (green-blind)

#243250

Tritanopia (blue-blind)

#003D40

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173750;
/* rgb */ color: rgb(23, 55, 80);
/* oklch */ color: oklch(32.6% 0.058 244.6);

Tailwind

colors: {
  custom: {
    50: '#5b6d81',
    500: '#173750',
    950: '#000000',
  },
}

SCSS

$custom: #173750;
$custom-light: #5b6d81;
$custom-dark: #000000;

JSON

{
  "hex": "#173750",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 80
  },
  "hsl": {
    "h": 206.316,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.32551,
    "c": 0.05842,
    "h": 244.6
  },
  "luminance": 0.03494
}

Semantic roles & 50–950 ramp

primary

#173750

secondary

#875D3C

accent

#8B49DF

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #173750

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

Preview Lab → · Contrast checker → · Palette generator →