#183C52#183C52

#183C52 is a dark, muted cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.057 H 238.4°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#183C52
RGB	rgb(24, 60, 82)
HSL	hsl(203, 55%, 21%)
HSV	hsv(203, 71%, 32%)
CMYK	cmyk(70.7%, 26.8%, 0%, 67.8%)
CIE-LAB	lab(23.79, -4.91, -17.13)
CIE-LCH	lch(23.79, 17.82, 254.02°)
OKLab	oklab(34.07% -0.0296 -0.0481)
OKLCH	oklch(34.07% 0.057 238.4)
XYZ	xyz(3.5150, 4.0347, 8.5745)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C52 #522E18

analogous

#18524B #183C52 #181F52

triadic

#183C52 #52183C #3C5218

tetradic

#183C52 #4B1852 #522E18 #1F5218

square

#183C52 #4B1852 #522E18 #1F5218

split-complementary

#183C52 #52181F #524B18

monochromatic

#071118 #0A1923 #183C52 #265F81 #3481B1

Accessibility & contrast

On white

11.62

#183C52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183C52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C52

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C52	#FFFFFF	#000000	##FFFFFF
##183C52	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323C53

Deuteranopia (green-blind)

#2A3652

Tritanopia (blue-blind)

#004243

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183c52;
/* rgb */ color: rgb(24, 60, 82);
/* oklch */ color: oklch(34.1% 0.057 238.4);

Tailwind

colors: {
  custom: {
    50: '#5c7182',
    500: '#183c52',
    950: '#000000',
  },
}

SCSS

$custom: #183c52;
$custom-light: #5c7182;
$custom-dark: #000000;

JSON

{
  "hex": "#183c52",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 82
  },
  "hsl": {
    "h": 202.759,
    "s": 54.717,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34073,
    "c": 0.05651,
    "h": 238.4
  },
  "luminance": 0.04035
}

Semantic roles & 50–950 ramp

primary

#183C52

secondary

#895A3D

accent

#824ADE

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070A

muted

#797A7C

Preview Lab

Preview with #183C52

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

Preview Lab → · Contrast checker → · Palette generator →