#183648#183648

#183648 is a dark, muted cyan. Relative luminance 0.033; OKLCH L 31.9% C 0.048 H 237.3°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#183648
RGB	rgb(24, 54, 72)
HSL	hsl(203, 50%, 19%)
HSV	hsv(203, 67%, 28%)
CMYK	cmyk(66.7%, 25%, 0%, 71.8%)
CIE-LAB	lab(21.21, -4.77, -14.47)
CIE-LCH	lch(21.21, 15.24, 251.77°)
OKLab	oklab(31.86% -0.0261 -0.0405)
OKLCH	oklch(31.86% 0.048 237.3)
XYZ	xyz(2.8651, 3.3001, 6.6156)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183648 #482A18

analogous

#184842 #183648 #181E48

triadic

#183648 #481836 #364818

tetradic

#183648 #421848 #482A18 #1E4818

square

#183648 #421848 #482A18 #1E4818

split-complementary

#183648 #48181E #484218

monochromatic

#081117 #09141A #183648 #275876 #377BA4

Accessibility & contrast

On white

12.65

#183648 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#183648 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183648

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183648	#FFFFFF	#000000	##FFFFFF
##183648	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3649

Deuteranopia (green-blind)

#273148

Tritanopia (blue-blind)

#003B3C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183648;
/* rgb */ color: rgb(24, 54, 72);
/* oklch */ color: oklch(31.9% 0.048 237.3);

Tailwind

colors: {
  custom: {
    50: '#5a6c7b',
    500: '#183648',
    950: '#000000',
  },
}

SCSS

$custom: #183648;
$custom-light: #5a6c7b;
$custom-dark: #000000;

JSON

{
  "hex": "#183648",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 72
  },
  "hsl": {
    "h": 202.5,
    "s": 50,
    "l": 18.824
  },
  "oklch": {
    "l": 0.31864,
    "c": 0.04818,
    "h": 237.3
  },
  "luminance": 0.033
}

Semantic roles & 50–950 ramp

primary

#183648

secondary

#7F563D

accent

#824EDA

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183648

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

Preview Lab → · Contrast checker → · Palette generator →