#183779#183779

#183779 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.6% C 0.119 H 262.9°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#183779
RGB	rgb(24, 55, 121)
HSL	hsl(221, 67%, 28%)
HSV	hsv(221, 80%, 47%)
CMYK	cmyk(80.2%, 54.5%, 0%, 52.5%)
CIE-LAB	lab(24.66, 14.47, -40.95)
CIE-LCH	lch(24.66, 43.44, 289.46°)
OKLab	oklab(35.55% -0.0147 -0.118)
OKLCH	oklch(35.55% 0.119 262.9)
XYZ	xyz(5.1928, 4.3064, 18.6430)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183779 #795A18

analogous

#186779 #183779 #291879

triadic

#183779 #791837 #377918

tetradic

#183779 #791867 #795A18 #187929

square

#183779 #791867 #795A18 #187929

split-complementary

#183779 #792918 #677918

monochromatic

#050C1A #0E2046 #183779 #224EAC #3568D7

Accessibility & contrast

On white

11.28

#183779 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#183779 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183779

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183779	#FFFFFF	#000000	##FFFFFF
##183779	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#083F7B

Deuteranopia (green-blind)

#003678

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183779;
/* rgb */ color: rgb(24, 55, 121);
/* oklch */ color: oklch(35.6% 0.119 262.9);

Tailwind

colors: {
  custom: {
    50: '#656da0',
    500: '#183779',
    950: '#000000',
  },
}

SCSS

$custom: #183779;
$custom-light: #656da0;
$custom-dark: #000000;

JSON

{
  "hex": "#183779",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 121
  },
  "hsl": {
    "h": 220.825,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35554,
    "c": 0.11887,
    "h": 262.9
  },
  "luminance": 0.04307
}

Semantic roles & 50–950 ramp

primary

#183779

secondary

#AE8A3F

accent

#B33EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #183779

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

Preview Lab → · Contrast checker → · Palette generator →