#304D99#304D99

#304D99 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.1% C 0.129 H 265.7°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#304D99
RGB	rgb(48, 77, 153)
HSL	hsl(223, 52%, 39%)
HSV	hsv(223, 69%, 60%)
CMYK	cmyk(68.6%, 49.7%, 0%, 40%)
CIE-LAB	lab(34.47, 15.49, -44.86)
CIE-LCH	lch(34.47, 47.46, 289.04°)
OKLab	oklab(44.05% -0.0098 -0.1286)
OKLCH	oklch(44.05% 0.129 265.7)
XYZ	xyz(9.6206, 8.2351, 31.2133)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304D99 #997C30

analogous

#308299 #304D99 #483099

triadic

#304D99 #99304D #4D9930

tetradic

#304D99 #993082 #997C30 #309948

square

#304D99 #993082 #997C30 #309948

split-complementary

#304D99 #994830 #829930

monochromatic

#131E3C #21366A #304D99 #4266C4 #718CD2

Accessibility & contrast

On white

7.93

#304D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#304D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304D99

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304D99	#FFFFFF	#000000	##FFFFFF
##304D99	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24569C

Deuteranopia (green-blind)

#074D97

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #304d99;
/* rgb */ color: rgb(48, 77, 153);
/* oklch */ color: oklch(44.1% 0.129 265.7);

Tailwind

colors: {
  custom: {
    50: '#757eb7',
    500: '#304d99',
    950: '#000000',
  },
}

SCSS

$custom: #304d99;
$custom-light: #757eb7;
$custom-dark: #000000;

JSON

{
  "hex": "#304d99",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 153
  },
  "hsl": {
    "h": 223.429,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44054,
    "c": 0.12897,
    "h": 265.7
  },
  "luminance": 0.08236
}

Semantic roles & 50–950 ramp

primary

#304D99

secondary

#BAA46B

accent

#B44CDC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #304D99

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

Preview Lab → · Contrast checker → · Palette generator →