#183690#183690

#183690 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.4% C 0.153 H 265.3°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#183690
RGB	rgb(24, 54, 144)
HSL	hsl(225, 71%, 33%)
HSV	hsv(225, 83%, 56%)
CMYK	cmyk(83.3%, 62.5%, 0%, 43.5%)
CIE-LAB	lab(26.29, 24.55, -52.68)
CIE-LCH	lch(26.29, 58.12, 294.99°)
OKLab	oklab(37.38% -0.0126 -0.1524)
OKLCH	oklch(37.38% 0.153 265.3)
XYZ	xyz(6.7281, 4.8453, 26.9608)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183690 #907218

analogous

#187290 #183690 #361890

triadic

#183690 #901836 #369018

tetradic

#183690 #901872 #907218 #189036

square

#183690 #901872 #907218 #189036

split-complementary

#183690 #903618 #729018

monochromatic

#070F27 #0F225C #183690 #214AC4 #436AE0

Accessibility & contrast

On white

10.66

#183690 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#183690 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183690

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183690	#FFFFFF	#000000	##FFFFFF
##183690	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004493

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183690;
/* rgb */ color: rgb(24, 54, 144);
/* oklch */ color: oklch(37.4% 0.153 265.3);

Tailwind

colors: {
  custom: {
    50: '#6c6cb1',
    500: '#183690',
    950: '#000000',
  },
}

SCSS

$custom: #183690;
$custom-light: #6c6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#183690",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 144
  },
  "hsl": {
    "h": 225,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37378,
    "c": 0.15293,
    "h": 265.3
  },
  "luminance": 0.04846
}

Semantic roles & 50–950 ramp

primary

#183690

secondary

#C0A143

accent

#C13AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #183690

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

Preview Lab → · Contrast checker → · Palette generator →