#183C86#183C86

#183C86 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.131 H 262.5°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#183C86
RGB	rgb(24, 60, 134)
HSL	hsl(220, 70%, 31%)
HSV	hsv(220, 82%, 53%)
CMYK	cmyk(82.1%, 55.2%, 0%, 47.5%)
CIE-LAB	lab(27.15, 16.31, -45.08)
CIE-LCH	lch(27.15, 47.94, 289.88°)
OKLab	oklab(37.76% -0.0172 -0.13)
OKLCH	oklch(37.76% 0.131 262.5)
XYZ	xyz(6.2941, 5.1464, 23.2113)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C86 #866218

analogous

#187386 #183C86 #2B1886

triadic

#183C86 #86183C #3C8618

tetradic

#183C86 #861873 #866218 #18862B

square

#183C86 #861873 #866218 #18862B

split-complementary

#183C86 #862B18 #738618

monochromatic

#050E1E #0F2552 #183C86 #2153BA #3C71DC

Accessibility & contrast

On white

10.35

#183C86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#183C86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C86

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C86	#FFFFFF	#000000	##FFFFFF
##183C86	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004589

Deuteranopia (green-blind)

#003B85

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #183c86;
/* rgb */ color: rgb(24, 60, 134);
/* oklch */ color: oklch(37.8% 0.131 262.5);

Tailwind

colors: {
  custom: {
    50: '#6871aa',
    500: '#183c86',
    950: '#000000',
  },
}

SCSS

$custom: #183c86;
$custom-light: #6871aa;
$custom-dark: #000000;

JSON

{
  "hex": "#183c86",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 134
  },
  "hsl": {
    "h": 220.364,
    "s": 69.62,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37763,
    "c": 0.13114,
    "h": 262.5
  },
  "luminance": 0.05147
}

Semantic roles & 50–950 ramp

primary

#183C86

secondary

#BA9240

accent

#B23BEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183C86

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

Preview Lab → · Contrast checker → · Palette generator →