#183773#183773

#183773 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.1% C 0.110 H 261.9°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#183773
RGB	rgb(24, 55, 115)
HSL	hsl(220, 65%, 27%)
HSV	hsv(220, 79%, 45%)
CMYK	cmyk(79.1%, 52.2%, 0%, 54.9%)
CIE-LAB	lab(24.21, 11.98, -37.88)
CIE-LCH	lch(24.21, 39.73, 287.55°)
OKLab	oklab(35.06% -0.0155 -0.1089)
OKLCH	oklch(35.06% 0.11 261.9)
XYZ	xyz(4.8363, 4.1638, 16.7651)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183773 #735418

analogous

#186573 #183773 #261873

triadic

#183773 #731837 #377318

tetradic

#183773 #731865 #735418 #187326

square

#183773 #731865 #735418 #187326

split-complementary

#183773 #732618 #657318

monochromatic

#050C19 #0D1F40 #183773 #234FA6 #3169D4

Accessibility & contrast

On white

11.46

#183773 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#183773 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183773

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183773	#FFFFFF	#000000	##FFFFFF
##183773	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133E75

Deuteranopia (green-blind)

#003672

Tritanopia (blue-blind)

#00454F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183773;
/* rgb */ color: rgb(24, 55, 115);
/* oklch */ color: oklch(35.1% 0.110 261.9);

Tailwind

colors: {
  custom: {
    50: '#646d9c',
    500: '#183773',
    950: '#000000',
  },
}

SCSS

$custom: #183773;
$custom-light: #646d9c;
$custom-dark: #000000;

JSON

{
  "hex": "#183773",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 115
  },
  "hsl": {
    "h": 219.56,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.35063,
    "c": 0.10999,
    "h": 261.9
  },
  "luminance": 0.04164
}

Semantic roles & 50–950 ramp

primary

#183773

secondary

#A8843F

accent

#AF3FE8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183773

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

Preview Lab → · Contrast checker → · Palette generator →