#183A52#183A52

#183A52 is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.5% C 0.058 H 242.1°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#183A52
RGB	rgb(24, 58, 82)
HSL	hsl(205, 55%, 21%)
HSV	hsv(205, 71%, 32%)
CMYK	cmyk(70.7%, 29.3%, 0%, 67.8%)
CIE-LAB	lab(23.10, -3.58, -18.20)
CIE-LCH	lch(23.10, 18.55, 258.86°)
OKLab	oklab(33.53% -0.0272 -0.0512)
OKLCH	oklch(33.53% 0.058 242.1)
XYZ	xyz(3.4122, 3.8292, 8.5403)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A52 #523018

analogous

#18524D #183A52 #181D52

triadic

#183A52 #52183A #3A5218

tetradic

#183A52 #4D1852 #523018 #1D5218

square

#183A52 #4D1852 #523018 #1D5218

split-complementary

#183A52 #52181D #524D18

monochromatic

#071118 #0A1923 #183A52 #265B81 #347DB1

Accessibility & contrast

On white

11.89

#183A52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183A52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A52

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A52	#FFFFFF	#000000	##FFFFFF
##183A52	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3A53

Deuteranopia (green-blind)

#273552

Tritanopia (blue-blind)

#004042

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183a52;
/* rgb */ color: rgb(24, 58, 82);
/* oklch */ color: oklch(33.5% 0.058 242.1);

Tailwind

colors: {
  custom: {
    50: '#5c7082',
    500: '#183a52',
    950: '#000000',
  },
}

SCSS

$custom: #183a52;
$custom-light: #5c7082;
$custom-dark: #000000;

JSON

{
  "hex": "#183a52",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 82
  },
  "hsl": {
    "h": 204.828,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.33528,
    "c": 0.05799,
    "h": 242.1
  },
  "luminance": 0.03829
}

Semantic roles & 50–950 ramp

primary

#183A52

secondary

#895C3D

accent

#874ADE

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070A

muted

#797A7C

Preview Lab

Preview with #183A52

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

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