#183554#183554

#183554 is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.3% C 0.066 H 251.9°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#183554
RGB	rgb(24, 53, 84)
HSL	hsl(211, 56%, 21%)
HSV	hsv(211, 71%, 33%)
CMYK	cmyk(71.4%, 36.9%, 0%, 67.1%)
CIE-LAB	lab(21.51, 0.61, -22.02)
CIE-LCH	lch(21.51, 22.03, 271.59°)
OKLab	oklab(32.31% -0.0204 -0.0624)
OKLCH	oklch(32.31% 0.066 251.9)
XYZ	xyz(3.2494, 3.3802, 8.8670)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183554 #543718

analogous

#185354 #183554 #191854

triadic

#183554 #541835 #355418

tetradic

#183554 #541853 #543718 #185419

square

#183554 #541853 #543718 #185419

split-complementary

#183554 #541918 #535418

monochromatic

#070F18 #0A1724 #183554 #265384 #3371B3

Accessibility & contrast

On white

12.53

#183554 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#183554 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183554

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183554	#FFFFFF	#000000	##FFFFFF
##183554	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273755

Deuteranopia (green-blind)

#1F3153

Tritanopia (blue-blind)

#003C40

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #183554;
/* rgb */ color: rgb(24, 53, 84);
/* oklch */ color: oklch(32.3% 0.066 251.9);

Tailwind

colors: {
  custom: {
    50: '#5c6c84',
    500: '#183554',
    950: '#000000',
  },
}

SCSS

$custom: #183554;
$custom-light: #5c6c84;
$custom-dark: #000000;

JSON

{
  "hex": "#183554",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 84
  },
  "hsl": {
    "h": 211,
    "s": 55.556,
    "l": 21.176
  },
  "oklch": {
    "l": 0.32311,
    "c": 0.06565,
    "h": 251.9
  },
  "luminance": 0.0338
}

Semantic roles & 50–950 ramp

primary

#183554

secondary

#8B653D

accent

#9649DF

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #183554

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

Preview Lab → · Contrast checker → · Palette generator →