#304FB0#304FB0

#304FB0 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.2% C 0.159 H 266.7°. Best body text is #FFFFFF at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#304FB0
RGB	rgb(48, 79, 176)
HSL	hsl(225, 57%, 44%)
HSV	hsv(225, 73%, 69%)
CMYK	cmyk(72.7%, 55.1%, 0%, 31%)
CIE-LAB	lab(36.66, 22.81, -55.09)
CIE-LCH	lch(36.66, 59.62, 292.49°)
OKLab	oklab(46.23% -0.0092 -0.1587)
OKLCH	oklch(46.23% 0.159 266.7)
XYZ	xyz(11.8486, 9.3537, 42.2469)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FB0 #B09130

analogous

#308FB0 #304FB0 #5130B0

triadic

#304FB0 #B0304F #4FB030

tetradic

#304FB0 #B0308F #B09130 #30B051

square

#304FB0 #B0308F #B09130 #30B051

split-complementary

#304FB0 #B05130 #8FB030

monochromatic

#162450 #233980 #304FB0 #4E6DCF #7E95DC

Accessibility & contrast

On white

7.31

#304FB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#304FB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FB0

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FB0	#FFFFFF	#000000	##FFFFFF
##304FB0	1.00	7.31	2.87	7.31
#FFFFFF	7.31	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB3

Deuteranopia (green-blind)

#0051AE

Tritanopia (blue-blind)

#006777

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304fb0;
/* rgb */ color: rgb(48, 79, 176);
/* oklch */ color: oklch(46.2% 0.159 266.7);

Tailwind

colors: {
  custom: {
    50: '#7a7fc8',
    500: '#304fb0',
    950: '#000000',
  },
}

SCSS

$custom: #304fb0;
$custom-light: #7a7fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#304fb0",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 176
  },
  "hsl": {
    "h": 225.469,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.46232,
    "c": 0.15892,
    "h": 266.7
  },
  "luminance": 0.09355
}

Semantic roles & 50–950 ramp

primary

#304FB0

secondary

#C5B277

accent

#BB47E0

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #304FB0

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

Preview Lab → · Contrast checker → · Palette generator →