#304CBD#304CBD

#304CBD is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.7% C 0.180 H 267.9°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#304CBD
RGB	rgb(48, 76, 189)
HSL	hsl(228, 59%, 46%)
HSV	hsv(228, 75%, 74%)
CMYK	cmyk(74.6%, 59.8%, 0%, 25.9%)
CIE-LAB	lab(36.87, 29.61, -62.39)
CIE-LCH	lch(36.87, 69.06, 295.39°)
OKLab	oklab(46.71% -0.0065 -0.1802)
OKLCH	oklch(46.71% 0.18 267.9)
XYZ	xyz(12.9855, 9.4700, 49.2778)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304CBD #BDA130

analogous

#3093BD #304CBD #5B30BD

triadic

#304CBD #BD304C #4CBD30

tetradic

#304CBD #BD3093 #BDA130 #30BD5B

square

#304CBD #BD3093 #BDA130 #30BD5B

split-complementary

#304CBD #BD5B30 #93BD30

monochromatic

#17255B #24388C #304CBD #566FD4 #8799E0

Accessibility & contrast

On white

7.26

#304CBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#304CBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304CBD

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304CBD	#FFFFFF	#000000	##FFFFFF
##304CBD	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC1

Deuteranopia (green-blind)

#0050BB

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304cbd;
/* rgb */ color: rgb(48, 76, 189);
/* oklch */ color: oklch(46.7% 0.180 267.9);

Tailwind

colors: {
  custom: {
    50: '#7d7dd2',
    500: '#304cbd',
    950: '#000000',
  },
}

SCSS

$custom: #304cbd;
$custom-light: #7d7dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#304cbd",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 189
  },
  "hsl": {
    "h": 228.085,
    "s": 59.494,
    "l": 46.471
  },
  "oklch": {
    "l": 0.46711,
    "c": 0.18029,
    "h": 267.9
  },
  "luminance": 0.09471
}

Semantic roles & 50–950 ramp

primary

#304CBD

secondary

#CABB7F

accent

#C345E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0914

muted

#7C7B83

Preview Lab

Preview with #304CBD

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

Preview Lab → · Contrast checker → · Palette generator →