#183A48#183A48

#183A48 is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.0% C 0.046 H 227.7°. Best body text is #FFFFFF at 12.09:1 contrast (WCAG AA passes).

Color values

HEX	#183A48
RGB	rgb(24, 58, 72)
HSL	hsl(198, 50%, 19%)
HSV	hsv(198, 67%, 28%)
CMYK	cmyk(66.7%, 19.4%, 0%, 71.8%)
CIE-LAB	lab(22.61, -7.39, -12.31)
CIE-LCH	lch(22.61, 14.36, 239.04°)
OKLab	oklab(32.98% -0.0313 -0.0343)
OKLCH	oklch(32.98% 0.046 227.7)
XYZ	xyz(3.0590, 3.6879, 6.6803)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A48 #482618

analogous

#18483E #183A48 #182248

triadic

#183A48 #48183A #3A4818

tetradic

#183A48 #3E1848 #482618 #224818

square

#183A48 #3E1848 #482618 #224818

split-complementary

#183A48 #481822 #483E18

monochromatic

#081217 #09151A #183A48 #275F76 #3784A4

Accessibility & contrast

On white

12.09

#183A48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#183A48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A48

12.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A48	#FFFFFF	#000000	##FFFFFF
##183A48	1.00	12.09	1.74	12.09
#FFFFFF	12.09	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333949

Deuteranopia (green-blind)

#2C3448

Tritanopia (blue-blind)

#003E3F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183a48;
/* rgb */ color: rgb(24, 58, 72);
/* oklch */ color: oklch(33.0% 0.046 227.7);

Tailwind

colors: {
  custom: {
    50: '#5a707b',
    500: '#183a48',
    950: '#000000',
  },
}

SCSS

$custom: #183a48;
$custom-light: #5a707b;
$custom-dark: #000000;

JSON

{
  "hex": "#183a48",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 72
  },
  "hsl": {
    "h": 197.5,
    "s": 50,
    "l": 18.824
  },
  "oklch": {
    "l": 0.32981,
    "c": 0.04644,
    "h": 227.7
  },
  "luminance": 0.03688
}

Semantic roles & 50–950 ramp

primary

#183A48

secondary

#7F503D

accent

#774EDA

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183A48

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

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