#183240#183240

#183240 is a dark, muted cyan. Relative luminance 0.028; OKLCH L 30.3% C 0.041 H 233.9°. Best body text is #FFFFFF at 13.38:1 contrast (WCAG AA passes).

Color values

HEX	#183240
RGB	rgb(24, 50, 64)
HSL	hsl(201, 45%, 17%)
HSV	hsv(201, 63%, 25%)
CMYK	cmyk(62.5%, 21.9%, 0%, 74.9%)
CIE-LAB	lab(19.41, -5.10, -11.83)
CIE-LCH	lch(19.41, 12.88, 246.69°)
OKLab	oklab(30.31% -0.0241 -0.033)
OKLCH	oklch(30.31% 0.041 233.9)
XYZ	xyz(2.4424, 2.8453, 5.2700)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183240 #402618

analogous

#18403A #183240 #181E40

triadic

#183240 #401832 #324018

tetradic

#183240 #3A1840 #402618 #1E4018

square

#183240 #3A1840 #402618 #1E4018

split-complementary

#183240 #40181E #403A18

monochromatic

#081116 #081116 #183240 #29556D #397899

Accessibility & contrast

On white

13.38

#183240 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#183240 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183240

13.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183240	#FFFFFF	#000000	##FFFFFF
##183240	1.00	13.38	1.57	13.38
#FFFFFF	13.38	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3141

Deuteranopia (green-blind)

#262D40

Tritanopia (blue-blind)

#003637

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #183240;
/* rgb */ color: rgb(24, 50, 64);
/* oklch */ color: oklch(30.3% 0.041 233.9);

Tailwind

colors: {
  custom: {
    50: '#596974',
    500: '#183240',
    950: '#000000',
  },
}

SCSS

$custom: #183240;
$custom-light: #596974;
$custom-dark: #000000;

JSON

{
  "hex": "#183240",
  "rgb": {
    "r": 24,
    "g": 50,
    "b": 64
  },
  "hsl": {
    "h": 201,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.30313,
    "c": 0.04081,
    "h": 233.9
  },
  "luminance": 0.02846
}

Semantic roles & 50–950 ramp

primary

#183240

secondary

#77513D

accent

#8053D5

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040608

muted

#797A7B

Preview Lab

Preview with #183240

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

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