#183C68#183C68

#183C68 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.5% C 0.087 H 255.0°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#183C68
RGB	rgb(24, 60, 104)
HSL	hsl(213, 63%, 25%)
HSV	hsv(213, 77%, 41%)
CMYK	cmyk(76.9%, 42.3%, 0%, 59.2%)
CIE-LAB	lab(25.03, 3.90, -29.51)
CIE-LCH	lch(25.03, 29.76, 277.53°)
OKLab	oklab(35.46% -0.0225 -0.0842)
OKLCH	oklch(35.46% 0.087 255)
XYZ	xyz(4.4903, 4.4249, 13.7115)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C68 #684418

analogous

#186468 #183C68 #1C1868

triadic

#183C68 #68183C #3C6818

tetradic

#183C68 #681864 #684418 #18681C

square

#183C68 #681864 #684418 #18681C

split-complementary

#183C68 #681C18 #646818

monochromatic

#060E19 #0D1F36 #183C68 #23599A #2F75CB

Accessibility & contrast

On white

11.14

#183C68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#183C68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C68

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C68	#FFFFFF	#000000	##FFFFFF
##183C68	1.00	11.14	1.89	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273F6A

Deuteranopia (green-blind)

#1B3867

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183c68;
/* rgb */ color: rgb(24, 60, 104);
/* oklch */ color: oklch(35.5% 0.087 255.0);

Tailwind

colors: {
  custom: {
    50: '#617193',
    500: '#183c68',
    950: '#000000',
  },
}

SCSS

$custom: #183c68;
$custom-light: #617193;
$custom-dark: #000000;

JSON

{
  "hex": "#183c68",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 104
  },
  "hsl": {
    "h": 213,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35456,
    "c": 0.08714,
    "h": 255
  },
  "luminance": 0.04425
}

Semantic roles & 50–950 ramp

primary

#183C68

secondary

#9E733E

accent

#9C42E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183C68

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

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