#304BC1#304BC1

#304BC1 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.9% C 0.187 H 268.2°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#304BC1
RGB	rgb(48, 75, 193)
HSL	hsl(229, 60%, 47%)
HSV	hsv(229, 75%, 76%)
CMYK	cmyk(75.1%, 61.1%, 0%, 24.3%)
CIE-LAB	lab(36.95, 31.73, -64.61)
CIE-LCH	lch(36.95, 71.99, 296.16°)
OKLab	oklab(46.87% -0.0058 -0.1867)
OKLCH	oklch(46.87% 0.187 268.2)
XYZ	xyz(13.3573, 9.5093, 51.5733)
Luminance	0.0951 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304BC1 #C1A630

analogous

#3093C1 #304BC1 #5E30C1

triadic

#304BC1 #C1304B #4BC130

tetradic

#304BC1 #C13093 #C1A630 #30C15E

square

#304BC1 #C13093 #C1A630 #30C15E

split-complementary

#304BC1 #C15E30 #93C130

monochromatic

#18255F #243890 #304BC1 #5970D6 #8A9AE2

Accessibility & contrast

On white

7.24

#304BC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#304BC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304BC1

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304BC1	#FFFFFF	#000000	##FFFFFF
##304BC1	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC5

Deuteranopia (green-blind)

#0050BF

Tritanopia (blue-blind)

#00697F

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304bc1;
/* rgb */ color: rgb(48, 75, 193);
/* oklch */ color: oklch(46.9% 0.187 268.2);

Tailwind

colors: {
  custom: {
    50: '#7e7dd5',
    500: '#304bc1',
    950: '#000000',
  },
}

SCSS

$custom: #304bc1;
$custom-light: #7e7dd5;
$custom-dark: #000000;

JSON

{
  "hex": "#304bc1",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 193
  },
  "hsl": {
    "h": 228.828,
    "s": 60.166,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46867,
    "c": 0.18679,
    "h": 268.2
  },
  "luminance": 0.09511
}

Semantic roles & 50–950 ramp

primary

#304BC1

secondary

#CCBE81

accent

#C644E3

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0914

muted

#7C7B83

Preview Lab

Preview with #304BC1

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

Preview Lab → · Contrast checker → · Palette generator →