#183347#183347

#183347 is a dark, muted cyan. Relative luminance 0.030; OKLCH L 31.0% C 0.049 H 242.6°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#183347
RGB	rgb(24, 51, 71)
HSL	hsl(206, 49%, 19%)
HSV	hsv(206, 66%, 28%)
CMYK	cmyk(66.2%, 28.2%, 0%, 72.2%)
CIE-LAB	lab(20.11, -3.13, -15.50)
CIE-LCH	lch(20.11, 15.82, 258.57°)
OKLab	oklab(30.98% -0.0225 -0.0435)
OKLCH	oklch(30.98% 0.049 242.6)
XYZ	xyz(2.6974, 3.0165, 6.4001)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183347 #472C18

analogous

#184743 #183347 #181B47

triadic

#183347 #471833 #334718

tetradic

#183347 #431847 #472C18 #1B4718

square

#183347 #431847 #472C18 #1B4718

split-complementary

#183347 #47181B #474318

monochromatic

#081017 #091219 #183347 #275475 #3775A2

Accessibility & contrast

On white

13.10

#183347 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#183347 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183347

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183347	#FFFFFF	#000000	##FFFFFF
##183347	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3348

Deuteranopia (green-blind)

#242E47

Tritanopia (blue-blind)

#00383A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #183347;
/* rgb */ color: rgb(24, 51, 71);
/* oklch */ color: oklch(31.0% 0.049 242.6);

Tailwind

colors: {
  custom: {
    50: '#5a6a7a',
    500: '#183347',
    950: '#000000',
  },
}

SCSS

$custom: #183347;
$custom-light: #5a6a7a;
$custom-dark: #000000;

JSON

{
  "hex": "#183347",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 71
  },
  "hsl": {
    "h": 205.532,
    "s": 49.474,
    "l": 18.627
  },
  "oklch": {
    "l": 0.30978,
    "c": 0.04898,
    "h": 242.6
  },
  "luminance": 0.03017
}

Semantic roles & 50–950 ramp

primary

#183347

secondary

#7E593D

accent

#8A4FD9

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040609

muted

#797A7B

Preview Lab

Preview with #183347

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

Preview Lab → · Contrast checker → · Palette generator →