#183379#183379

#183379 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.124 H 264.7°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#183379
RGB	rgb(24, 51, 121)
HSL	hsl(223, 67%, 28%)
HSV	hsv(223, 80%, 47%)
CMYK	cmyk(80.2%, 57.9%, 0%, 52.5%)
CIE-LAB	lab(23.48, 17.32, -42.87)
CIE-LCH	lch(23.48, 46.24, 291.99°)
OKLab	oklab(34.66% -0.0115 -0.1237)
OKLCH	oklch(34.66% 0.124 264.7)
XYZ	xyz(5.0105, 3.9417, 18.5822)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183379 #795E18

analogous

#186379 #183379 #2D1879

triadic

#183379 #791833 #337918

tetradic

#183379 #791863 #795E18 #18792D

square

#183379 #791863 #795E18 #18792D

split-complementary

#183379 #792D18 #637918

monochromatic

#050B1A #0E1D46 #183379 #2249AC #3562D7

Accessibility & contrast

On white

11.74

#183379 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#183379 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183379

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183379	#FFFFFF	#000000	##FFFFFF
##183379	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7B

Deuteranopia (green-blind)

#003478

Tritanopia (blue-blind)

#004450

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183379;
/* rgb */ color: rgb(24, 51, 121);
/* oklch */ color: oklch(34.7% 0.124 264.7);

Tailwind

colors: {
  custom: {
    50: '#656aa0',
    500: '#183379',
    950: '#000000',
  },
}

SCSS

$custom: #183379;
$custom-light: #656aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#183379",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 121
  },
  "hsl": {
    "h": 223.299,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34659,
    "c": 0.1242,
    "h": 264.7
  },
  "luminance": 0.03942
}

Semantic roles & 50–950 ramp

primary

#183379

secondary

#AE8F3F

accent

#BA3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #183379

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

Preview Lab → · Contrast checker → · Palette generator →