#173554#173554

#173554 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.3% C 0.066 H 251.3°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#173554
RGB	rgb(23, 53, 84)
HSL	hsl(210, 57%, 21%)
HSV	hsv(210, 73%, 33%)
CMYK	cmyk(72.6%, 36.9%, 0%, 67.1%)
CIE-LAB	lab(21.46, 0.42, -22.10)
CIE-LCH	lch(21.46, 22.10, 271.08°)
OKLab	oklab(32.26% -0.0213 -0.0626)
OKLCH	oklch(32.26% 0.066 251.3)
XYZ	xyz(3.2261, 3.3681, 8.8659)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173554 #543617

analogous

#175354 #173554 #171754

triadic

#173554 #541735 #355417

tetradic

#173554 #541753 #543617 #175417

square

#173554 #541753 #543617 #175417

split-complementary

#173554 #541717 #535417

monochromatic

#070F18 #0A1724 #173554 #245384 #3172B4

Accessibility & contrast

On white

12.55

#173554 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#173554 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173554

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173554	#FFFFFF	#000000	##FFFFFF
##173554	1.00	12.55	1.67	12.55
#FFFFFF	12.55	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273755

Deuteranopia (green-blind)

#1F3153

Tritanopia (blue-blind)

#003C40

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #173554;
/* rgb */ color: rgb(23, 53, 84);
/* oklch */ color: oklch(32.3% 0.066 251.3);

Tailwind

colors: {
  custom: {
    50: '#5c6c84',
    500: '#173554',
    950: '#000000',
  },
}

SCSS

$custom: #173554;
$custom-light: #5c6c84;
$custom-dark: #000000;

JSON

{
  "hex": "#173554",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 84
  },
  "hsl": {
    "h": 210.492,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.32263,
    "c": 0.06614,
    "h": 251.3
  },
  "luminance": 0.03368
}

Semantic roles & 50–950 ramp

primary

#173554

secondary

#8B643C

accent

#9548E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173554

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

Preview Lab → · Contrast checker → · Palette generator →