#183990#183990

#183990 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.0% C 0.149 H 264.4°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#183990
RGB	rgb(24, 57, 144)
HSL	hsl(224, 71%, 33%)
HSV	hsv(224, 83%, 56%)
CMYK	cmyk(83.3%, 60.4%, 0%, 43.5%)
CIE-LAB	lab(27.11, 22.48, -51.34)
CIE-LCH	lch(27.11, 56.04, 293.65°)
OKLab	oklab(37.99% -0.0144 -0.1484)
OKLCH	oklch(37.99% 0.149 264.4)
XYZ	xyz(6.8721, 5.1332, 27.0088)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183990 #906F18

analogous

#187590 #183990 #331890

triadic

#183990 #901839 #399018

tetradic

#183990 #901875 #906F18 #189033

square

#183990 #901875 #906F18 #189033

split-complementary

#183990 #903318 #759018

monochromatic

#070F27 #0F245C #183990 #214EC4 #436EE0

Accessibility & contrast

On white

10.36

#183990 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#183990 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183990

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183990	#FFFFFF	#000000	##FFFFFF
##183990	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004693

Deuteranopia (green-blind)

#003B8E

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #183990;
/* rgb */ color: rgb(24, 57, 144);
/* oklch */ color: oklch(38.0% 0.149 264.4);

Tailwind

colors: {
  custom: {
    50: '#6b6eb1',
    500: '#183990',
    950: '#000000',
  },
}

SCSS

$custom: #183990;
$custom-light: #6b6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#183990",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 144
  },
  "hsl": {
    "h": 223.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37992,
    "c": 0.14912,
    "h": 264.4
  },
  "luminance": 0.05134
}

Semantic roles & 50–950 ramp

primary

#183990

secondary

#C09E43

accent

#BD3AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #183990

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

Preview Lab → · Contrast checker → · Palette generator →