#304FC1#304FC1

#304FC1 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.6% C 0.182 H 267.3°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#304FC1
RGB	rgb(48, 79, 193)
HSL	hsl(227, 60%, 47%)
HSV	hsv(227, 75%, 76%)
CMYK	cmyk(75.1%, 59.1%, 0%, 24.3%)
CIE-LAB	lab(37.97, 29.14, -62.95)
CIE-LCH	lch(37.97, 69.37, 294.84°)
OKLab	oklab(47.63% -0.0085 -0.1818)
OKLCH	oklch(47.63% 0.182 267.3)
XYZ	xyz(13.6372, 10.0691, 51.6666)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FC1 #C1A230

analogous

#3098C1 #304FC1 #5930C1

triadic

#304FC1 #C1304F #4FC130

tetradic

#304FC1 #C13098 #C1A230 #30C159

square

#304FC1 #C13098 #C1A230 #30C159

split-complementary

#304FC1 #C15930 #98C130

monochromatic

#18275F #243B90 #304FC1 #5973D6 #8A9CE2

Accessibility & contrast

On white

6.97

#304FC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#304FC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #304FC1

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FC1	#FFFFFF	#000000	##FFFFFF
##304FC1	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C5

Deuteranopia (green-blind)

#0053BF

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #304fc1;
/* rgb */ color: rgb(48, 79, 193);
/* oklch */ color: oklch(47.6% 0.182 267.3);

Tailwind

colors: {
  custom: {
    50: '#7d80d5',
    500: '#304fc1',
    950: '#000000',
  },
}

SCSS

$custom: #304fc1;
$custom-light: #7d80d5;
$custom-dark: #000000;

JSON

{
  "hex": "#304fc1",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 193
  },
  "hsl": {
    "h": 227.172,
    "s": 60.166,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47625,
    "c": 0.18197,
    "h": 267.3
  },
  "luminance": 0.10071
}

Semantic roles & 50–950 ramp

primary

#304FC1

secondary

#CCBC81

accent

#C144E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #304FC1

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

Preview Lab → · Contrast checker → · Palette generator →