#183C98#183C98

#183C98 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.156 H 264.1°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#183C98
RGB	rgb(24, 60, 152)
HSL	hsl(223, 73%, 35%)
HSV	hsv(223, 84%, 60%)
CMYK	cmyk(84.2%, 60.5%, 0%, 40.4%)
CIE-LAB	lab(28.62, 23.62, -53.78)
CIE-LCH	lch(28.62, 58.73, 293.71°)
OKLab	oklab(39.34% -0.016 -0.1555)
OKLCH	oklch(39.34% 0.156 264.1)
XYZ	xyz(7.6580, 5.6920, 30.3947)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C98 #987418

analogous

#187C98 #183C98 #341898

triadic

#183C98 #98183C #3C9818

tetradic

#183C98 #98187C #987418 #189834

square

#183C98 #98187C #987418 #189834

split-complementary

#183C98 #983418 #7C9818

monochromatic

#07122E #102763 #183C98 #2051CD #4874E2

Accessibility & contrast

On white

9.82

#183C98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#183C98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C98

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C98	#FFFFFF	#000000	##FFFFFF
##183C98	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9B

Deuteranopia (green-blind)

#003E96

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #183c98;
/* rgb */ color: rgb(24, 60, 152);
/* oklch */ color: oklch(39.3% 0.156 264.1);

Tailwind

colors: {
  custom: {
    50: '#6d71b7',
    500: '#183c98',
    950: '#000000',
  },
}

SCSS

$custom: #183c98;
$custom-light: #6d71b7;
$custom-dark: #000000;

JSON

{
  "hex": "#183c98",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 152
  },
  "hsl": {
    "h": 223.125,
    "s": 72.727,
    "l": 34.51
  },
  "oklch": {
    "l": 0.39335,
    "c": 0.15636,
    "h": 264.1
  },
  "luminance": 0.05693
}

Semantic roles & 50–950 ramp

primary

#183C98

secondary

#C4A148

accent

#BC38EF

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #183C98

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

Preview Lab → · Contrast checker → · Palette generator →