#183A45#183A45

#183A45 is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.8% C 0.044 H 221.8°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#183A45
RGB	rgb(24, 58, 69)
HSL	hsl(195, 48%, 18%)
HSV	hsv(195, 65%, 27%)
CMYK	cmyk(65.2%, 15.9%, 0%, 72.9%)
CIE-LAB	lab(22.48, -8.48, -10.51)
CIE-LCH	lch(22.48, 13.50, 231.10°)
OKLab	oklab(32.83% -0.0326 -0.0292)
OKLCH	oklch(32.83% 0.044 221.8)
XYZ	xyz(2.9635, 3.6497, 6.1774)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A45 #452318

analogous

#184539 #183A45 #182345

triadic

#183A45 #45183A #3A4518

tetradic

#183A45 #391845 #452318 #234518

square

#183A45 #391845 #452318 #234518

split-complementary

#183A45 #451823 #453918

monochromatic

#081317 #081418 #183A45 #286072 #3886A0

Accessibility & contrast

On white

12.14

#183A45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#183A45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A45

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A45	#FFFFFF	#000000	##FFFFFF
##183A45	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343846

Deuteranopia (green-blind)

#2D3445

Tritanopia (blue-blind)

#003E3D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183a45;
/* rgb */ color: rgb(24, 58, 69);
/* oklch */ color: oklch(32.8% 0.044 221.8);

Tailwind

colors: {
  custom: {
    50: '#5a7078',
    500: '#183a45',
    950: '#000000',
  },
}

SCSS

$custom: #183a45;
$custom-light: #5a7078;
$custom-dark: #000000;

JSON

{
  "hex": "#183a45",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 69
  },
  "hsl": {
    "h": 194.667,
    "s": 48.387,
    "l": 18.235
  },
  "oklch": {
    "l": 0.3283,
    "c": 0.0438,
    "h": 221.8
  },
  "luminance": 0.0365
}

Semantic roles & 50–950 ramp

primary

#183A45

secondary

#7C4C3D

accent

#7150D8

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183A45

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

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