#304FB9#304FB9

#304FB9 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.171 H 267.1°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#304FB9
RGB	rgb(48, 79, 185)
HSL	hsl(226, 59%, 46%)
HSV	hsv(226, 74%, 73%)
CMYK	cmyk(74.1%, 57.3%, 0%, 27.5%)
CIE-LAB	lab(37.34, 26.17, -59.29)
CIE-LCH	lch(37.34, 64.81, 293.82°)
OKLab	oklab(46.96% -0.0088 -0.171)
OKLCH	oklch(46.96% 0.171 267.1)
XYZ	xyz(12.7688, 9.7218, 47.0931)
Luminance	0.0972 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FB9 #B99A30

analogous

#3093B9 #304FB9 #5530B9

triadic

#304FB9 #B9304F #4FB930

tetradic

#304FB9 #B93093 #B99A30 #30B955

square

#304FB9 #B93093 #B99A30 #30B955

split-complementary

#304FB9 #B95530 #93B930

monochromatic

#172558 #233A88 #304FB9 #5470D3 #8499DF

Accessibility & contrast

On white

7.13

#304FB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#304FB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FB9

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FB9	#FFFFFF	#000000	##FFFFFF
##304FB9	1.00	7.13	2.94	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBD

Deuteranopia (green-blind)

#0052B7

Tritanopia (blue-blind)

#00697C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #304fb9;
/* rgb */ color: rgb(48, 79, 185);
/* oklch */ color: oklch(47.0% 0.171 267.1);

Tailwind

colors: {
  custom: {
    50: '#7c7fcf',
    500: '#304fb9',
    950: '#000000',
  },
}

SCSS

$custom: #304fb9;
$custom-light: #7c7fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#304fb9",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 185
  },
  "hsl": {
    "h": 226.423,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.4696,
    "c": 0.17123,
    "h": 267.1
  },
  "luminance": 0.09723
}

Semantic roles & 50–950 ramp

primary

#304FB9

secondary

#C9B77C

accent

#BF46E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #304FB9

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

Preview Lab → · Contrast checker → · Palette generator →