#304AB9#304AB9

#304AB9 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.0% C 0.177 H 268.3°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#304AB9
RGB	rgb(48, 74, 185)
HSL	hsl(229, 59%, 46%)
HSV	hsv(229, 74%, 73%)
CMYK	cmyk(74.1%, 60%, 0%, 27.5%)
CIE-LAB	lab(36.04, 29.44, -61.41)
CIE-LCH	lch(36.04, 68.10, 295.61°)
OKLab	oklab(45.99% -0.0051 -0.1773)
OKLCH	oklch(45.99% 0.177 268.3)
XYZ	xyz(12.4216, 9.0274, 46.9773)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AB9 #B99F30

analogous

#308EB9 #304AB9 #5A30B9

triadic

#304AB9 #B9304A #4AB930

tetradic

#304AB9 #B9308E #B99F30 #30B95A

square

#304AB9 #B9308E #B99F30 #30B95A

split-complementary

#304AB9 #B95A30 #8EB930

monochromatic

#172358 #233788 #304AB9 #546CD3 #8495DF

Accessibility & contrast

On white

7.48

#304AB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#304AB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AB9

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AB9	#FFFFFF	#000000	##FFFFFF
##304AB9	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBD

Deuteranopia (green-blind)

#004FB7

Tritanopia (blue-blind)

#00667A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #304ab9;
/* rgb */ color: rgb(48, 74, 185);
/* oklch */ color: oklch(46.0% 0.177 268.3);

Tailwind

colors: {
  custom: {
    50: '#7c7ccf',
    500: '#304ab9',
    950: '#000000',
  },
}

SCSS

$custom: #304ab9;
$custom-light: #7c7ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#304ab9",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 185
  },
  "hsl": {
    "h": 228.613,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.45988,
    "c": 0.17737,
    "h": 268.3
  },
  "luminance": 0.09029
}

Semantic roles & 50–950 ramp

primary

#304AB9

secondary

#C9BA7C

accent

#C446E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #304AB9

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

Preview Lab → · Contrast checker → · Palette generator →