#183A69#183A69

#183A69 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 35.0% C 0.091 H 257.2°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#183A69
RGB	rgb(24, 58, 105)
HSL	hsl(215, 63%, 25%)
HSV	hsv(215, 77%, 41%)
CMYK	cmyk(77.1%, 44.8%, 0%, 58.8%)
CIE-LAB	lab(24.45, 5.71, -31.08)
CIE-LCH	lch(24.45, 31.60, 280.41°)
OKLab	oklab(35.03% -0.0202 -0.0888)
OKLCH	oklch(35.03% 0.091 257.2)
XYZ	xyz(4.4386, 4.2397, 13.9463)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A69 #694718

analogous

#186269 #183A69 #1E1869

triadic

#183A69 #69183A #3A6918

tetradic

#183A69 #691862 #694718 #18691E

square

#183A69 #691862 #694718 #18691E

split-complementary

#183A69 #691E18 #626918

monochromatic

#060E19 #0D1E37 #183A69 #23569B #2F71CD

Accessibility & contrast

On white

11.36

#183A69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#183A69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A69

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A69	#FFFFFF	#000000	##FFFFFF
##183A69	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#233E6B

Deuteranopia (green-blind)

#153768

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183a69;
/* rgb */ color: rgb(24, 58, 105);
/* oklch */ color: oklch(35.0% 0.091 257.2);

Tailwind

colors: {
  custom: {
    50: '#616f94',
    500: '#183a69',
    950: '#000000',
  },
}

SCSS

$custom: #183a69;
$custom-light: #616f94;
$custom-dark: #000000;

JSON

{
  "hex": "#183a69",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 105
  },
  "hsl": {
    "h": 214.815,
    "s": 62.791,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35026,
    "c": 0.09111,
    "h": 257.2
  },
  "luminance": 0.0424
}

Semantic roles & 50–950 ramp

primary

#183A69

secondary

#9F763E

accent

#A142E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183A69

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

Preview Lab → · Contrast checker → · Palette generator →