#173257#173257

#173257 is a dark, moderate cyan. Relative luminance 0.032; OKLCH L 31.7% C 0.074 H 256.8°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#173257
RGB	rgb(23, 50, 87)
HSL	hsl(215, 58%, 22%)
HSV	hsv(215, 74%, 34%)
CMYK	cmyk(73.6%, 42.5%, 0%, 65.9%)
CIE-LAB	lab(20.64, 3.75, -25.39)
CIE-LCH	lch(20.64, 25.67, 278.40°)
OKLab	oklab(31.68% -0.0169 -0.0723)
OKLCH	oklch(31.68% 0.074 256.8)
XYZ	xyz(3.2136, 3.1512, 9.4538)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173257 #573C17

analogous

#175257 #173257 #1C1757

triadic

#173257 #571732 #325717

tetradic

#173257 #571752 #573C17 #17571C

square

#173257 #571752 #573C17 #17571C

split-complementary

#173257 #571C17 #525717

monochromatic

#060E18 #0A1627 #173257 #244E87 #316AB8

Accessibility & contrast

On white

12.88

#173257 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#173257 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173257

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173257	#FFFFFF	#000000	##FFFFFF
##173257	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#213558

Deuteranopia (green-blind)

#182F56

Tritanopia (blue-blind)

#003B40

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #173257;
/* rgb */ color: rgb(23, 50, 87);
/* oklch */ color: oklch(31.7% 0.074 256.8);

Tailwind

colors: {
  custom: {
    50: '#5d6986',
    500: '#173257',
    950: '#000000',
  },
}

SCSS

$custom: #173257;
$custom-light: #5d6986;
$custom-dark: #000000;

JSON

{
  "hex": "#173257",
  "rgb": {
    "r": 23,
    "g": 50,
    "b": 87
  },
  "hsl": {
    "h": 214.688,
    "s": 58.182,
    "l": 21.569
  },
  "oklch": {
    "l": 0.3168,
    "c": 0.07426,
    "h": 256.8
  },
  "luminance": 0.03151
}

Semantic roles & 50–950 ramp

primary

#173257

secondary

#8E6B3C

accent

#A046E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173257

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

Preview Lab → · Contrast checker → · Palette generator →