#183D86#183D86

#183D86 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.0% C 0.130 H 262.0°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#183D86
RGB	rgb(24, 61, 134)
HSL	hsl(220, 70%, 31%)
HSV	hsv(220, 82%, 53%)
CMYK	cmyk(82.1%, 54.5%, 0%, 47.5%)
CIE-LAB	lab(27.44, 15.60, -44.61)
CIE-LCH	lch(27.44, 47.26, 289.28°)
OKLab	oklab(37.99% -0.018 -0.1286)
OKLCH	oklch(37.99% 0.13 262)
XYZ	xyz(6.3470, 5.2522, 23.2289)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D86 #866118

analogous

#187486 #183D86 #2A1886

triadic

#183D86 #86183D #3D8618

tetradic

#183D86 #861874 #866118 #18862A

square

#183D86 #861874 #866118 #18862A

split-complementary

#183D86 #862A18 #748618

monochromatic

#050E1E #0F2552 #183D86 #2155BA #3C72DC

Accessibility & contrast

On white

10.24

#183D86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#183D86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D86

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D86	#FFFFFF	#000000	##FFFFFF
##183D86	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064689

Deuteranopia (green-blind)

#003C85

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #183d86;
/* rgb */ color: rgb(24, 61, 134);
/* oklch */ color: oklch(38.0% 0.130 262.0);

Tailwind

colors: {
  custom: {
    50: '#6871aa',
    500: '#183d86',
    950: '#000000',
  },
}

SCSS

$custom: #183d86;
$custom-light: #6871aa;
$custom-dark: #000000;

JSON

{
  "hex": "#183d86",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 134
  },
  "hsl": {
    "h": 219.818,
    "s": 69.62,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37986,
    "c": 0.12983,
    "h": 262
  },
  "luminance": 0.05253
}

Semantic roles & 50–950 ramp

primary

#183D86

secondary

#BA9140

accent

#B13BEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183D86

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

Preview Lab → · Contrast checker → · Palette generator →