#183455#183455

#183455 is a dark, moderate cyan. Relative luminance 0.033; OKLCH L 32.1% C 0.068 H 253.9°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#183455
RGB	rgb(24, 52, 85)
HSL	hsl(212, 56%, 21%)
HSV	hsv(212, 72%, 33%)
CMYK	cmyk(71.8%, 38.8%, 0%, 66.7%)
CIE-LAB	lab(21.23, 1.72, -23.13)
CIE-LCH	lch(21.23, 23.19, 274.24°)
OKLab	oklab(32.11% -0.0189 -0.0656)
OKLCH	oklch(32.11% 0.068 253.9)
XYZ	xyz(3.2438, 3.3057, 9.0597)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183455 #553918

analogous

#185355 #183455 #1B1855

triadic

#183455 #551834 #345518

tetradic

#183455 #551853 #553918 #18551B

square

#183455 #551853 #553918 #18551B

split-complementary

#183455 #551B18 #535518

monochromatic

#070F18 #0B1725 #183455 #255185 #336EB4

Accessibility & contrast

On white

12.64

#183455 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#183455 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183455

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183455	#FFFFFF	#000000	##FFFFFF
##183455	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253656

Deuteranopia (green-blind)

#1D3054

Tritanopia (blue-blind)

#003C40

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183455;
/* rgb */ color: rgb(24, 52, 85);
/* oklch */ color: oklch(32.1% 0.068 253.9);

Tailwind

colors: {
  custom: {
    50: '#5d6b85',
    500: '#183455',
    950: '#000000',
  },
}

SCSS

$custom: #183455;
$custom-light: #5d6b85;
$custom-dark: #000000;

JSON

{
  "hex": "#183455",
  "rgb": {
    "r": 24,
    "g": 52,
    "b": 85
  },
  "hsl": {
    "h": 212.459,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.32113,
    "c": 0.0683,
    "h": 253.9
  },
  "luminance": 0.03306
}

Semantic roles & 50–950 ramp

primary

#183455

secondary

#8C683D

accent

#9A49DF

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #183455

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

Preview Lab → · Contrast checker → · Palette generator →