#183C6A#183C6A

#183C6A is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.6% C 0.090 H 255.9°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#183C6A
RGB	rgb(24, 60, 106)
HSL	hsl(214, 63%, 25%)
HSV	hsv(214, 77%, 42%)
CMYK	cmyk(77.4%, 43.4%, 0%, 58.4%)
CIE-LAB	lab(25.16, 4.72, -30.59)
CIE-LCH	lch(25.16, 30.95, 278.78°)
OKLab	oklab(35.6% -0.022 -0.0874)
OKLCH	oklch(35.6% 0.09 255.9)
XYZ	xyz(4.5931, 4.4660, 14.2528)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C6A #6A4618

analogous

#18656A #183C6A #1D186A

triadic

#183C6A #6A183C #3C6A18

tetradic

#183C6A #6A1865 #6A4618 #186A1D

square

#183C6A #6A1865 #6A4618 #186A1D

split-complementary

#183C6A #6A1D18 #656A18

monochromatic

#060E19 #0D2038 #183C6A #23589C #2F74CE

Accessibility & contrast

On white

11.09

#183C6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#183C6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C6A

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C6A	#FFFFFF	#000000	##FFFFFF
##183C6A	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26406C

Deuteranopia (green-blind)

#183869

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183c6a;
/* rgb */ color: rgb(24, 60, 106);
/* oklch */ color: oklch(35.6% 0.090 255.9);

Tailwind

colors: {
  custom: {
    50: '#617195',
    500: '#183c6a',
    950: '#000000',
  },
}

SCSS

$custom: #183c6a;
$custom-light: #617195;
$custom-dark: #000000;

JSON

{
  "hex": "#183c6a",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 106
  },
  "hsl": {
    "h": 213.659,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.35596,
    "c": 0.09009,
    "h": 255.9
  },
  "luminance": 0.04467
}

Semantic roles & 50–950 ramp

primary

#183C6A

secondary

#A0753E

accent

#9E42E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #183C6A

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

Preview Lab → · Contrast checker → · Palette generator →