#304DB9#304DB9

#304DB9 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.6% C 0.174 H 267.6°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#304DB9
RGB	rgb(48, 77, 185)
HSL	hsl(227, 59%, 46%)
HSV	hsv(227, 74%, 73%)
CMYK	cmyk(74.1%, 58.4%, 0%, 27.5%)
CIE-LAB	lab(36.81, 27.48, -60.14)
CIE-LCH	lch(36.81, 66.12, 294.56°)
OKLab	oklab(46.57% -0.0073 -0.1735)
OKLCH	oklch(46.57% 0.174 267.6)
XYZ	xyz(12.6267, 9.4376, 47.0457)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DB9 #B99C30

analogous

#3091B9 #304DB9 #5730B9

triadic

#304DB9 #B9304D #4DB930

tetradic

#304DB9 #B93091 #B99C30 #30B957

square

#304DB9 #B93091 #B99C30 #30B957

split-complementary

#304DB9 #B95730 #91B930

monochromatic

#172558 #233988 #304DB9 #546FD3 #8497DF

Accessibility & contrast

On white

7.27

#304DB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#304DB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DB9

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DB9	#FFFFFF	#000000	##FFFFFF
##304DB9	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBD

Deuteranopia (green-blind)

#0050B7

Tritanopia (blue-blind)

#00687B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304db9;
/* rgb */ color: rgb(48, 77, 185);
/* oklch */ color: oklch(46.6% 0.174 267.6);

Tailwind

colors: {
  custom: {
    50: '#7c7ecf',
    500: '#304db9',
    950: '#000000',
  },
}

SCSS

$custom: #304db9;
$custom-light: #7c7ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#304db9",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 185
  },
  "hsl": {
    "h": 227.299,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.46567,
    "c": 0.1737,
    "h": 267.6
  },
  "luminance": 0.09439
}

Semantic roles & 50–950 ramp

primary

#304DB9

secondary

#C9B87C

accent

#C146E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #304DB9

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

Preview Lab → · Contrast checker → · Palette generator →