#183353#183353

#183353 is a dark, moderate cyan. Relative luminance 0.032; OKLCH L 31.7% C 0.066 H 254.0°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#183353
RGB	rgb(24, 51, 83)
HSL	hsl(213, 55%, 21%)
HSV	hsv(213, 71%, 33%)
CMYK	cmyk(71.1%, 38.6%, 0%, 67.5%)
CIE-LAB	lab(20.77, 1.61, -22.51)
CIE-LCH	lch(20.77, 22.57, 274.08°)
OKLab	oklab(31.72% -0.0183 -0.0639)
OKLCH	oklch(31.72% 0.066 254)
XYZ	xyz(3.1213, 3.1861, 8.6324)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183353 #533818

analogous

#185053 #183353 #1A1853

triadic

#183353 #531833 #335318

tetradic

#183353 #531850 #533818 #18531A

square

#183353 #531850 #533818 #18531A

split-complementary

#183353 #531A18 #505318

monochromatic

#070F18 #0A1624 #183353 #265082 #336DB2

Accessibility & contrast

On white

12.83

#183353 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#183353 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183353

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183353	#FFFFFF	#000000	##FFFFFF
##183353	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253554

Deuteranopia (green-blind)

#1D2F52

Tritanopia (blue-blind)

#003A3F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #183353;
/* rgb */ color: rgb(24, 51, 83);
/* oklch */ color: oklch(31.7% 0.066 254.0);

Tailwind

colors: {
  custom: {
    50: '#5c6a83',
    500: '#183353',
    950: '#000000',
  },
}

SCSS

$custom: #183353;
$custom-light: #5c6a83;
$custom-dark: #000000;

JSON

{
  "hex": "#183353",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 83
  },
  "hsl": {
    "h": 212.542,
    "s": 55.14,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31718,
    "c": 0.06644,
    "h": 254
  },
  "luminance": 0.03186
}

Semantic roles & 50–950 ramp

primary

#183353

secondary

#8A673D

accent

#9A49DE

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060A

muted

#797A7C

Preview Lab

Preview with #183353

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

Preview Lab → · Contrast checker → · Palette generator →