#304A99#304A99

#304A99 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.4% C 0.133 H 267.0°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#304A99
RGB	rgb(48, 74, 153)
HSL	hsl(225, 52%, 39%)
HSV	hsv(225, 69%, 60%)
CMYK	cmyk(68.6%, 51.6%, 0%, 40%)
CIE-LAB	lab(33.62, 17.49, -46.23)
CIE-LCH	lch(33.62, 49.43, 290.72°)
OKLab	oklab(43.41% -0.0069 -0.1327)
OKLCH	oklch(43.41% 0.133 267)
XYZ	xyz(9.4155, 7.8249, 31.1450)
Luminance	0.0783 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304A99 #997F30

analogous

#307F99 #304A99 #4B3099

triadic

#304A99 #99304A #4A9930

tetradic

#304A99 #99307F #997F30 #30994B

square

#304A99 #99307F #997F30 #30994B

split-complementary

#304A99 #994B30 #7F9930

monochromatic

#131D3C #21336A #304A99 #4262C4 #7189D2

Accessibility & contrast

On white

8.19

#304A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#304A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304A99

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304A99	#FFFFFF	#000000	##FFFFFF
##304A99	1.00	8.19	2.57	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C549C

Deuteranopia (green-blind)

#004B97

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304a99;
/* rgb */ color: rgb(48, 74, 153);
/* oklch */ color: oklch(43.4% 0.133 267.0);

Tailwind

colors: {
  custom: {
    50: '#757cb8',
    500: '#304a99',
    950: '#000000',
  },
}

SCSS

$custom: #304a99;
$custom-light: #757cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#304a99",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 153
  },
  "hsl": {
    "h": 225.143,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.43405,
    "c": 0.13287,
    "h": 267
  },
  "luminance": 0.07826
}

Semantic roles & 50–950 ramp

primary

#304A99

secondary

#BAA66B

accent

#B84CDC

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #304A99

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

Preview Lab → · Contrast checker → · Palette generator →