#183D50#183D50

#183D50 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.054 H 233.8°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#183D50
RGB	rgb(24, 61, 80)
HSL	hsl(200, 54%, 20%)
HSV	hsv(200, 70%, 31%)
CMYK	cmyk(70%, 23.7%, 0%, 68.6%)
CIE-LAB	lab(24.03, -6.33, -15.43)
CIE-LCH	lch(24.03, 16.67, 247.70°)
OKLab	oklab(34.24% -0.0317 -0.0432)
OKLCH	oklch(34.24% 0.054 233.8)
XYZ	xyz(3.4928, 4.1105, 8.1972)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D50 #502B18

analogous

#185047 #183D50 #182150

triadic

#183D50 #50183D #3D5018

tetradic

#183D50 #471850 #502B18 #215018

square

#183D50 #471850 #502B18 #215018

split-complementary

#183D50 #501821 #504718

monochromatic

#071218 #0A1921 #183D50 #26617F #3485AE

Accessibility & contrast

On white

11.52

#183D50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183D50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D50

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D50	#FFFFFF	#000000	##FFFFFF
##183D50	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343C51

Deuteranopia (green-blind)

#2C3750

Tritanopia (blue-blind)

#004243

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183d50;
/* rgb */ color: rgb(24, 61, 80);
/* oklch */ color: oklch(34.2% 0.054 233.8);

Tailwind

colors: {
  custom: {
    50: '#5c7281',
    500: '#183d50',
    950: '#000000',
  },
}

SCSS

$custom: #183d50;
$custom-light: #5c7281;
$custom-dark: #000000;

JSON

{
  "hex": "#183d50",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 80
  },
  "hsl": {
    "h": 200.357,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.34237,
    "c": 0.05358,
    "h": 233.8
  },
  "luminance": 0.04111
}

Semantic roles & 50–950 ramp

primary

#183D50

secondary

#87563D

accent

#7C4BDD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #183D50

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

Preview Lab → · Contrast checker → · Palette generator →