#304EB0#304EB0

#304EB0 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.0% C 0.160 H 267.0°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#304EB0
RGB	rgb(48, 78, 176)
HSL	hsl(226, 57%, 44%)
HSV	hsv(226, 73%, 69%)
CMYK	cmyk(72.7%, 55.7%, 0%, 31%)
CIE-LAB	lab(36.39, 23.47, -55.52)
CIE-LCH	lch(36.39, 60.28, 292.91°)
OKLab	oklab(46.03% -0.0084 -0.16)
OKLCH	oklch(46.03% 0.16 267)
XYZ	xyz(11.7771, 9.2105, 42.2230)
Luminance	0.0921 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EB0 #B09230

analogous

#308EB0 #304EB0 #5230B0

triadic

#304EB0 #B0304E #4EB030

tetradic

#304EB0 #B0308E #B09230 #30B052

square

#304EB0 #B0308E #B09230 #30B052

split-complementary

#304EB0 #B05230 #8EB030

monochromatic

#162350 #233980 #304EB0 #4E6CCF #7E94DC

Accessibility & contrast

On white

7.39

#304EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#304EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EB0

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EB0	#FFFFFF	#000000	##FFFFFF
##304EB0	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB3

Deuteranopia (green-blind)

#0050AE

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304eb0;
/* rgb */ color: rgb(48, 78, 176);
/* oklch */ color: oklch(46.0% 0.160 267.0);

Tailwind

colors: {
  custom: {
    50: '#7a7fc8',
    500: '#304eb0',
    950: '#000000',
  },
}

SCSS

$custom: #304eb0;
$custom-light: #7a7fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#304eb0",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 176
  },
  "hsl": {
    "h": 225.938,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.46029,
    "c": 0.16018,
    "h": 267
  },
  "luminance": 0.09212
}

Semantic roles & 50–950 ramp

primary

#304EB0

secondary

#C5B377

accent

#BD47E0

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #304EB0

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

Preview Lab → · Contrast checker → · Palette generator →