#304FC9#304FC9

#304FC9 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.3% C 0.193 H 267.5°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#304FC9
RGB	rgb(48, 79, 201)
HSL	hsl(228, 61%, 49%)
HSV	hsv(228, 76%, 79%)
CMYK	cmyk(76.1%, 60.7%, 0%, 21.2%)
CIE-LAB	lab(38.61, 32.09, -66.55)
CIE-LCH	lch(38.61, 73.88, 295.75°)
OKLab	oklab(48.31% -0.0084 -0.1923)
OKLCH	oklch(48.31% 0.193 267.5)
XYZ	xyz(14.5539, 10.4358, 56.4943)
Luminance	0.1044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FC9 #C9AA30

analogous

#309CC9 #304FC9 #5E30C9

triadic

#304FC9 #C9304F #4FC930

tetradic

#304FC9 #C9309C #C9AA30 #30C95E

square

#304FC9 #C9309C #C9AA30 #30C95E

split-complementary

#304FC9 #C95E30 #9CC930

monochromatic

#182866 #243C98 #304FC9 #5E77D8 #8FA0E4

Accessibility & contrast

On white

6.80

#304FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#304FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #304FC9

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FC9	#FFFFFF	#000000	##FFFFFF
##304FC9	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CD

Deuteranopia (green-blind)

#0054C7

Tritanopia (blue-blind)

#006E84

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #304fc9;
/* rgb */ color: rgb(48, 79, 201);
/* oklch */ color: oklch(48.3% 0.193 267.5);

Tailwind

colors: {
  custom: {
    50: '#7f80da',
    500: '#304fc9',
    950: '#000000',
  },
}

SCSS

$custom: #304fc9;
$custom-light: #7f80da;
$custom-dark: #000000;

JSON

{
  "hex": "#304fc9",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 201
  },
  "hsl": {
    "h": 227.843,
    "s": 61.446,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48309,
    "c": 0.19251,
    "h": 267.5
  },
  "luminance": 0.10437
}

Semantic roles & 50–950 ramp

primary

#304FC9

secondary

#CFC086

accent

#C443E5

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #304FC9

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

Preview Lab → · Contrast checker → · Palette generator →