#183E50#183E50

#183E50 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.053 H 231.7°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#183E50
RGB	rgb(24, 62, 80)
HSL	hsl(199, 54%, 20%)
HSV	hsv(199, 70%, 31%)
CMYK	cmyk(70%, 22.5%, 0%, 68.6%)
CIE-LAB	lab(24.38, -6.97, -14.89)
CIE-LCH	lch(24.38, 16.44, 244.91°)
OKLab	oklab(34.51% -0.0329 -0.0417)
OKLCH	oklch(34.51% 0.053 231.7)
XYZ	xyz(3.5467, 4.2183, 8.2152)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E50 #502A18

analogous

#185046 #183E50 #182250

triadic

#183E50 #50183E #3E5018

tetradic

#183E50 #461850 #502A18 #225018

square

#183E50 #461850 #502A18 #225018

split-complementary

#183E50 #501822 #504618

monochromatic

#071218 #0A1A21 #183E50 #26627F #3487AE

Accessibility & contrast

On white

11.39

#183E50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183E50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E50

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E50	#FFFFFF	#000000	##FFFFFF
##183E50	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353D51

Deuteranopia (green-blind)

#2D3750

Tritanopia (blue-blind)

#004344

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183e50;
/* rgb */ color: rgb(24, 62, 80);
/* oklch */ color: oklch(34.5% 0.053 231.7);

Tailwind

colors: {
  custom: {
    50: '#5c7381',
    500: '#183e50',
    950: '#000000',
  },
}

SCSS

$custom: #183e50;
$custom-light: #5c7381;
$custom-dark: #000000;

JSON

{
  "hex": "#183e50",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 80
  },
  "hsl": {
    "h": 199.286,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.34513,
    "c": 0.05309,
    "h": 231.7
  },
  "luminance": 0.04219
}

Semantic roles & 50–950 ramp

primary

#183E50

secondary

#87553D

accent

#7A4BDD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #183E50

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

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