#183F50#183F50

#183F50 is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.053 H 229.6°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#183F50
RGB	rgb(24, 63, 80)
HSL	hsl(198, 54%, 20%)
HSV	hsv(198, 70%, 31%)
CMYK	cmyk(70%, 21.2%, 0%, 68.6%)
CIE-LAB	lab(24.73, -7.61, -14.35)
CIE-LCH	lch(24.73, 16.25, 242.07°)
OKLab	oklab(34.79% -0.0341 -0.0401)
OKLCH	oklch(34.79% 0.053 229.6)
XYZ	xyz(3.6016, 4.3280, 8.2334)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F50 #502918

analogous

#185045 #183F50 #182350

triadic

#183F50 #50183F #3F5018

tetradic

#183F50 #451850 #502918 #235018

square

#183F50 #451850 #502918 #235018

split-complementary

#183F50 #501823 #504518

monochromatic

#071318 #0A1A21 #183F50 #26647F #3489AE

Accessibility & contrast

On white

11.26

#183F50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183F50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F50

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F50	#FFFFFF	#000000	##FFFFFF
##183F50	1.00	11.26	1.87	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363E51

Deuteranopia (green-blind)

#2E3850

Tritanopia (blue-blind)

#004445

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183f50;
/* rgb */ color: rgb(24, 63, 80);
/* oklch */ color: oklch(34.8% 0.053 229.6);

Tailwind

colors: {
  custom: {
    50: '#5c7481',
    500: '#183f50',
    950: '#000000',
  },
}

SCSS

$custom: #183f50;
$custom-light: #5c7481;
$custom-dark: #000000;

JSON

{
  "hex": "#183f50",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 80
  },
  "hsl": {
    "h": 198.214,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.3479,
    "c": 0.05269,
    "h": 229.6
  },
  "luminance": 0.04328
}

Semantic roles & 50–950 ramp

primary

#183F50

secondary

#87533D

accent

#774BDD

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #183F50

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

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