#304DBC#304DBC

#304DBC is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.8% C 0.178 H 267.7°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#304DBC
RGB	rgb(48, 77, 188)
HSL	hsl(228, 59%, 46%)
HSV	hsv(228, 74%, 74%)
CMYK	cmyk(74.5%, 59%, 0%, 26.3%)
CIE-LAB	lab(37.05, 28.59, -61.52)
CIE-LCH	lch(37.05, 67.84, 294.93°)
OKLab	oklab(46.82% -0.0072 -0.1776)
OKLCH	oklch(46.82% 0.178 267.7)
XYZ	xyz(12.9467, 9.5656, 48.7312)
Luminance	0.0957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DBC #BC9F30

analogous

#3093BC #304DBC #5930BC

triadic

#304DBC #BC304D #4DBC30

tetradic

#304DBC #BC3093 #BC9F30 #30BC59

square

#304DBC #BC3093 #BC9F30 #30BC59

split-complementary

#304DBC #BC5930 #93BC30

monochromatic

#17255A #24398B #304DBC #5570D4 #8699E0

Accessibility & contrast

On white

7.21

#304DBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#304DBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DBC

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DBC	#FFFFFF	#000000	##FFFFFF
##304DBC	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC0

Deuteranopia (green-blind)

#0051BA

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304dbc;
/* rgb */ color: rgb(48, 77, 188);
/* oklch */ color: oklch(46.8% 0.178 267.7);

Tailwind

colors: {
  custom: {
    50: '#7c7ed1',
    500: '#304dbc',
    950: '#000000',
  },
}

SCSS

$custom: #304dbc;
$custom-light: #7c7ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#304dbc",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 188
  },
  "hsl": {
    "h": 227.571,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.46818,
    "c": 0.17773,
    "h": 267.7
  },
  "luminance": 0.09567
}

Semantic roles & 50–950 ramp

primary

#304DBC

secondary

#CABA7E

accent

#C245E3

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #304DBC

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

Preview Lab → · Contrast checker → · Palette generator →