#183790#183790

#183790 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.6% C 0.152 H 265.0°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#183790
RGB	rgb(24, 55, 144)
HSL	hsl(225, 71%, 33%)
HSV	hsv(225, 83%, 56%)
CMYK	cmyk(83.3%, 61.8%, 0%, 43.5%)
CIE-LAB	lab(26.56, 23.86, -52.23)
CIE-LCH	lch(26.56, 57.42, 294.55°)
OKLab	oklab(37.58% -0.0132 -0.1511)
OKLCH	oklch(37.58% 0.152 265)
XYZ	xyz(6.7751, 4.9394, 26.9765)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183790 #907118

analogous

#187390 #183790 #351890

triadic

#183790 #901837 #379018

tetradic

#183790 #901873 #907118 #189035

square

#183790 #901873 #907118 #189035

split-complementary

#183790 #903518 #739018

monochromatic

#070F27 #0F235C #183790 #214BC4 #436BE0

Accessibility & contrast

On white

10.56

#183790 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#183790 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183790

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183790	#FFFFFF	#000000	##FFFFFF
##183790	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004593

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183790;
/* rgb */ color: rgb(24, 55, 144);
/* oklch */ color: oklch(37.6% 0.152 265.0);

Tailwind

colors: {
  custom: {
    50: '#6b6db1',
    500: '#183790',
    950: '#000000',
  },
}

SCSS

$custom: #183790;
$custom-light: #6b6db1;
$custom-dark: #000000;

JSON

{
  "hex": "#183790",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 144
  },
  "hsl": {
    "h": 224.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37581,
    "c": 0.15167,
    "h": 265
  },
  "luminance": 0.0494
}

Semantic roles & 50–950 ramp

primary

#183790

secondary

#C0A043

accent

#C03AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #183790

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

Preview Lab → · Contrast checker → · Palette generator →