#304DB4#304DB4

#304DB4 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.2% C 0.167 H 267.4°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#304DB4
RGB	rgb(48, 77, 180)
HSL	hsl(227, 58%, 45%)
HSV	hsv(227, 73%, 71%)
CMYK	cmyk(73.3%, 57.2%, 0%, 29.4%)
CIE-LAB	lab(36.42, 25.62, -57.83)
CIE-LCH	lch(36.42, 63.25, 293.90°)
OKLab	oklab(46.15% -0.0074 -0.1667)
OKLCH	oklch(46.15% 0.167 267.4)
XYZ	xyz(12.1082, 9.2301, 44.3146)
Luminance	0.0923 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DB4 #B49730

analogous

#308FB4 #304DB4 #5530B4

triadic

#304DB4 #B4304D #4DB430

tetradic

#304DB4 #B4308F #B49730 #30B455

square

#304DB4 #B4308F #B49730 #30B455

split-complementary

#304DB4 #B45530 #8FB430

monochromatic

#162453 #233884 #304DB4 #516DD1 #8195DD

Accessibility & contrast

On white

7.38

#304DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#304DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DB4

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DB4	#FFFFFF	#000000	##FFFFFF
##304DB4	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB8

Deuteranopia (green-blind)

#0050B2

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304db4;
/* rgb */ color: rgb(48, 77, 180);
/* oklch */ color: oklch(46.2% 0.167 267.4);

Tailwind

colors: {
  custom: {
    50: '#7b7ecb',
    500: '#304db4',
    950: '#000000',
  },
}

SCSS

$custom: #304db4;
$custom-light: #7b7ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#304db4",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 180
  },
  "hsl": {
    "h": 226.818,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.46153,
    "c": 0.16692,
    "h": 267.4
  },
  "luminance": 0.09231
}

Semantic roles & 50–950 ramp

primary

#304DB4

secondary

#C6B679

accent

#BF47E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #304DB4

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

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