#304EB4#304EB4

#304EB4 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.4% C 0.166 H 267.2°. Best body text is #FFFFFF at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#304EB4
RGB	rgb(48, 78, 180)
HSL	hsl(226, 58%, 45%)
HSV	hsv(226, 73%, 71%)
CMYK	cmyk(73.3%, 56.7%, 0%, 29.4%)
CIE-LAB	lab(36.69, 24.96, -57.40)
CIE-LCH	lch(36.69, 62.59, 293.50°)
OKLab	oklab(46.35% -0.0082 -0.1655)
OKLCH	oklch(46.35% 0.166 267.2)
XYZ	xyz(12.1787, 9.3712, 44.3381)
Luminance	0.0937 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EB4 #B49630

analogous

#3090B4 #304EB4 #5430B4

triadic

#304EB4 #B4304E #4EB430

tetradic

#304EB4 #B43090 #B49630 #30B454

square

#304EB4 #B43090 #B49630 #30B454

split-complementary

#304EB4 #B45430 #90B430

monochromatic

#162453 #233984 #304EB4 #516ED1 #8196DD

Accessibility & contrast

On white

7.31

#304EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#304EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EB4

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EB4	#FFFFFF	#000000	##FFFFFF
##304EB4	1.00	7.31	2.87	7.31
#FFFFFF	7.31	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB7

Deuteranopia (green-blind)

#0050B2

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304eb4;
/* rgb */ color: rgb(48, 78, 180);
/* oklch */ color: oklch(46.4% 0.166 267.2);

Tailwind

colors: {
  custom: {
    50: '#7b7fcb',
    500: '#304eb4',
    950: '#000000',
  },
}

SCSS

$custom: #304eb4;
$custom-light: #7b7fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#304eb4",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 180
  },
  "hsl": {
    "h": 226.364,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.46352,
    "c": 0.16567,
    "h": 267.2
  },
  "luminance": 0.09372
}

Semantic roles & 50–950 ramp

primary

#304EB4

secondary

#C6B579

accent

#BE47E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #304EB4

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

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