#304BBC#304BBC

#304BBC is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.4% C 0.180 H 268.2°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#304BBC
RGB	rgb(48, 75, 188)
HSL	hsl(228, 59%, 46%)
HSV	hsv(228, 74%, 74%)
CMYK	cmyk(74.5%, 60.1%, 0%, 26.3%)
CIE-LAB	lab(36.54, 29.90, -62.36)
CIE-LCH	lch(36.54, 69.15, 295.62°)
OKLab	oklab(46.43% -0.0058 -0.1801)
OKLCH	oklch(46.43% 0.18 268.2)
XYZ	xyz(12.8090, 9.2900, 48.6853)
Luminance	0.0929 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304BBC #BCA130

analogous

#3091BC #304BBC #5B30BC

triadic

#304BBC #BC304B #4BBC30

tetradic

#304BBC #BC3091 #BCA130 #30BC5B

square

#304BBC #BC3091 #BCA130 #30BC5B

split-complementary

#304BBC #BC5B30 #91BC30

monochromatic

#17245A #24388B #304BBC #556ED4 #8698E0

Accessibility & contrast

On white

7.35

#304BBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#304BBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304BBC

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304BBC	#FFFFFF	#000000	##FFFFFF
##304BBC	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC0

Deuteranopia (green-blind)

#0050BA

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304bbc;
/* rgb */ color: rgb(48, 75, 188);
/* oklch */ color: oklch(46.4% 0.180 268.2);

Tailwind

colors: {
  custom: {
    50: '#7d7dd1',
    500: '#304bbc',
    950: '#000000',
  },
}

SCSS

$custom: #304bbc;
$custom-light: #7d7dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#304bbc",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 188
  },
  "hsl": {
    "h": 228.429,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.46435,
    "c": 0.18016,
    "h": 268.2
  },
  "luminance": 0.09291
}

Semantic roles & 50–950 ramp

primary

#304BBC

secondary

#CABB7E

accent

#C445E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0914

muted

#7C7B83

Preview Lab

Preview with #304BBC

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

Preview Lab → · Contrast checker → · Palette generator →