#183744#183744

#183744 is a dark, muted cyan. Relative luminance 0.033; OKLCH L 31.9% C 0.043 H 227.8°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#183744
RGB	rgb(24, 55, 68)
HSL	hsl(198, 48%, 18%)
HSV	hsv(198, 65%, 27%)
CMYK	cmyk(64.7%, 19.1%, 0%, 73.3%)
CIE-LAB	lab(21.37, -6.92, -11.53)
CIE-LCH	lch(21.37, 13.45, 239.04°)
OKLab	oklab(31.93% -0.0291 -0.0321)
OKLCH	oklch(31.93% 0.043 227.8)
XYZ	xyz(2.7859, 3.3437, 5.9663)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183744 #442518

analogous

#18443B #183744 #182144

triadic

#183744 #441837 #374418

tetradic

#183744 #3B1844 #442518 #214418

square

#183744 #3B1844 #442518 #214418

split-complementary

#183744 #441821 #443B18

monochromatic

#081217 #081217 #183744 #285C71 #38809E

Accessibility & contrast

On white

12.58

#183744 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#183744 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183744

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183744	#FFFFFF	#000000	##FFFFFF
##183744	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303645

Deuteranopia (green-blind)

#2A3144

Tritanopia (blue-blind)

#003B3B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183744;
/* rgb */ color: rgb(24, 55, 68);
/* oklch */ color: oklch(31.9% 0.043 227.8);

Tailwind

colors: {
  custom: {
    50: '#5a6d78',
    500: '#183744',
    950: '#000000',
  },
}

SCSS

$custom: #183744;
$custom-light: #5a6d78;
$custom-dark: #000000;

JSON

{
  "hex": "#183744",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 68
  },
  "hsl": {
    "h": 197.727,
    "s": 47.826,
    "l": 18.039
  },
  "oklch": {
    "l": 0.31931,
    "c": 0.04333,
    "h": 227.8
  },
  "luminance": 0.03344
}

Semantic roles & 50–950 ramp

primary

#183744

secondary

#7B4F3D

accent

#7850D7

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183744

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

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