#183A43#183A43

#183A43 is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.7% C 0.042 H 217.5°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#183A43
RGB	rgb(24, 58, 67)
HSL	hsl(193, 47%, 18%)
HSV	hsv(193, 64%, 26%)
CMYK	cmyk(64.2%, 13.4%, 0%, 73.7%)
CIE-LAB	lab(22.39, -9.20, -9.30)
CIE-LCH	lch(22.39, 13.08, 225.32°)
OKLab	oklab(32.73% -0.0336 -0.0258)
OKLCH	oklch(32.73% 0.042 217.5)
XYZ	xyz(2.9025, 3.6253, 5.8559)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A43 #432118

analogous

#184336 #183A43 #182443

triadic

#183A43 #43183A #3A4318

tetradic

#183A43 #361843 #432118 #244318

square

#183A43 #361843 #432118 #244318

split-complementary

#183A43 #431824 #433618

monochromatic

#081417 #081417 #183A43 #286170 #38889D

Accessibility & contrast

On white

12.17

#183A43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#183A43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A43

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A43	#FFFFFF	#000000	##FFFFFF
##183A43	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343844

Deuteranopia (green-blind)

#2E3343

Tritanopia (blue-blind)

#003D3D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183a43;
/* rgb */ color: rgb(24, 58, 67);
/* oklch */ color: oklch(32.7% 0.042 217.5);

Tailwind

colors: {
  custom: {
    50: '#5a7077',
    500: '#183a43',
    950: '#000000',
  },
}

SCSS

$custom: #183a43;
$custom-light: #5a7077;
$custom-dark: #000000;

JSON

{
  "hex": "#183a43",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 67
  },
  "hsl": {
    "h": 192.558,
    "s": 47.253,
    "l": 17.843
  },
  "oklch": {
    "l": 0.32732,
    "c": 0.04234,
    "h": 217.5
  },
  "luminance": 0.03626
}

Semantic roles & 50–950 ramp

primary

#183A43

secondary

#7A4A3D

accent

#6D51D7

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183A43

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

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