#183B96#183B96

#183B96 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.155 H 264.3°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#183B96
RGB	rgb(24, 59, 150)
HSL	hsl(223, 72%, 34%)
HSV	hsv(223, 84%, 59%)
CMYK	cmyk(84%, 60.7%, 0%, 41.2%)
CIE-LAB	lab(28.18, 23.51, -53.28)
CIE-LCH	lch(28.18, 58.24, 293.81°)
OKLab	oklab(38.95% -0.0155 -0.1541)
OKLCH	oklch(38.95% 0.155 264.3)
XYZ	xyz(7.4437, 5.5232, 29.5220)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B96 #967318

analogous

#187A96 #183B96 #341896

triadic

#183B96 #96183B #3B9618

tetradic

#183B96 #96187A #967318 #189634

square

#183B96 #96187A #967318 #189634

split-complementary

#183B96 #963418 #7A9618

monochromatic

#07112C #102661 #183B96 #2050CB #4772E2

Accessibility & contrast

On white

9.98

#183B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#183B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B96

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B96	#FFFFFF	#000000	##FFFFFF
##183B96	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004899

Deuteranopia (green-blind)

#003D94

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #183b96;
/* rgb */ color: rgb(24, 59, 150);
/* oklch */ color: oklch(38.9% 0.155 264.3);

Tailwind

colors: {
  custom: {
    50: '#6d70b6',
    500: '#183b96',
    950: '#000000',
  },
}

SCSS

$custom: #183b96;
$custom-light: #6d70b6;
$custom-dark: #000000;

JSON

{
  "hex": "#183b96",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 150
  },
  "hsl": {
    "h": 223.333,
    "s": 72.414,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38949,
    "c": 0.15487,
    "h": 264.3
  },
  "luminance": 0.05524
}

Semantic roles & 50–950 ramp

primary

#183B96

secondary

#C3A047

accent

#BC39EF

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #183B96

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

Preview Lab → · Contrast checker → · Palette generator →