#304CB6#304CB6

#304CB6 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.1% C 0.171 H 267.8°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#304CB6
RGB	rgb(48, 76, 182)
HSL	hsl(227, 58%, 45%)
HSV	hsv(227, 74%, 71%)
CMYK	cmyk(73.6%, 58.2%, 0%, 28.6%)
CIE-LAB	lab(36.32, 27.02, -59.18)
CIE-LCH	lch(36.32, 65.06, 294.54°)
OKLab	oklab(46.12% -0.0066 -0.1708)
OKLCH	oklch(46.12% 0.171 267.8)
XYZ	xyz(12.2439, 9.1734, 45.3723)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304CB6 #B69A30

analogous

#308FB6 #304CB6 #5730B6

triadic

#304CB6 #B6304C #4CB630

tetradic

#304CB6 #B6308F #B69A30 #30B657

square

#304CB6 #B6308F #B69A30 #30B657

split-complementary

#304CB6 #B65730 #8FB630

monochromatic

#162455 #233886 #304CB6 #526CD1 #8295DE

Accessibility & contrast

On white

7.41

#304CB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#304CB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304CB6

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304CB6	#FFFFFF	#000000	##FFFFFF
##304CB6	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBA

Deuteranopia (green-blind)

#004FB4

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #304cb6;
/* rgb */ color: rgb(48, 76, 182);
/* oklch */ color: oklch(46.1% 0.171 267.8);

Tailwind

colors: {
  custom: {
    50: '#7b7dcd',
    500: '#304cb6',
    950: '#000000',
  },
}

SCSS

$custom: #304cb6;
$custom-light: #7b7dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#304cb6",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 182
  },
  "hsl": {
    "h": 227.463,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.46121,
    "c": 0.17088,
    "h": 267.8
  },
  "luminance": 0.09175
}

Semantic roles & 50–950 ramp

primary

#304CB6

secondary

#C7B77B

accent

#C146E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #304CB6

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

Preview Lab → · Contrast checker → · Palette generator →