#173755#173755

#173755 is a dark, moderate cyan. Relative luminance 0.036; OKLCH L 32.9% C 0.065 H 249.2°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#173755
RGB	rgb(23, 55, 85)
HSL	hsl(209, 57%, 21%)
HSV	hsv(209, 73%, 33%)
CMYK	cmyk(72.9%, 35.3%, 0%, 66.7%)
CIE-LAB	lab(22.20, -0.56, -21.60)
CIE-LCH	lch(22.20, 21.61, 268.51°)
OKLab	oklab(32.86% -0.0233 -0.0612)
OKLCH	oklch(32.86% 0.065 249.2)
XYZ	xyz(3.3586, 3.5701, 9.1047)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173755 #553517

analogous

#175554 #173755 #171855

triadic

#173755 #551737 #375517

tetradic

#173755 #541755 #553517 #185517

square

#173755 #541755 #553517 #185517

split-complementary

#173755 #551718 #555417

monochromatic

#071018 #0A1825 #173755 #245685 #3175B5

Accessibility & contrast

On white

12.25

#173755 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#173755 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173755

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173755	#FFFFFF	#000000	##FFFFFF
##173755	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3856

Deuteranopia (green-blind)

#213254

Tritanopia (blue-blind)

#003E42

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173755;
/* rgb */ color: rgb(23, 55, 85);
/* oklch */ color: oklch(32.9% 0.065 249.2);

Tailwind

colors: {
  custom: {
    50: '#5c6d85',
    500: '#173755',
    950: '#000000',
  },
}

SCSS

$custom: #173755;
$custom-light: #5c6d85;
$custom-dark: #000000;

JSON

{
  "hex": "#173755",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 85
  },
  "hsl": {
    "h": 209.032,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.32858,
    "c": 0.06544,
    "h": 249.2
  },
  "luminance": 0.0357
}

Semantic roles & 50–950 ramp

primary

#173755

secondary

#8C633C

accent

#9147E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #173755

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

Preview Lab → · Contrast checker → · Palette generator →