#183C45#183C45

#183C45 is a dark, muted cyan. Relative luminance 0.039; OKLCH L 33.4% C 0.044 H 216.5°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#183C45
RGB	rgb(24, 60, 69)
HSL	hsl(192, 48%, 18%)
HSV	hsv(192, 65%, 27%)
CMYK	cmyk(65.2%, 13%, 0%, 72.9%)
CIE-LAB	lab(23.19, -9.74, -9.43)
CIE-LCH	lch(23.19, 13.56, 224.07°)
OKLab	oklab(33.4% -0.0353 -0.0261)
OKLCH	oklch(33.4% 0.044 216.5)
XYZ	xyz(3.0663, 3.8553, 6.2116)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C45 #452118

analogous

#184537 #183C45 #182545

triadic

#183C45 #45183C #3C4518

tetradic

#183C45 #371845 #452118 #254518

square

#183C45 #371845 #452118 #254518

split-complementary

#183C45 #451825 #453718

monochromatic

#081417 #081518 #183C45 #286372 #388BA0

Accessibility & contrast

On white

11.86

#183C45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183C45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C45

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C45	#FFFFFF	#000000	##FFFFFF
##183C45	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363A46

Deuteranopia (green-blind)

#2F3545

Tritanopia (blue-blind)

#003F3F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183c45;
/* rgb */ color: rgb(24, 60, 69);
/* oklch */ color: oklch(33.4% 0.044 216.5);

Tailwind

colors: {
  custom: {
    50: '#5a7178',
    500: '#183c45',
    950: '#000000',
  },
}

SCSS

$custom: #183c45;
$custom-light: #5a7178;
$custom-dark: #000000;

JSON

{
  "hex": "#183c45",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 69
  },
  "hsl": {
    "h": 192,
    "s": 48.387,
    "l": 18.235
  },
  "oklch": {
    "l": 0.33397,
    "c": 0.04391,
    "h": 216.5
  },
  "luminance": 0.03856
}

Semantic roles & 50–950 ramp

primary

#183C45

secondary

#7C4A3D

accent

#6B50D8

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183C45

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

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