#304AB2#304AB2

#304AB2 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.4% C 0.168 H 268.2°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#304AB2
RGB	rgb(48, 74, 178)
HSL	hsl(228, 58%, 44%)
HSV	hsv(228, 73%, 70%)
CMYK	cmyk(73%, 58.4%, 0%, 30.2%)
CIE-LAB	lab(35.48, 26.85, -58.19)
CIE-LCH	lch(35.48, 64.08, 294.77°)
OKLab	oklab(45.4% -0.0052 -0.1678)
OKLCH	oklch(45.4% 0.168 268.2)
XYZ	xyz(11.7008, 8.7391, 43.1810)
Luminance	0.0874 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AB2 #B29830

analogous

#308BB2 #304AB2 #5730B2

triadic

#304AB2 #B2304A #4AB230

tetradic

#304AB2 #B2308B #B29830 #30B257

square

#304AB2 #B2308B #B29830 #30B257

split-complementary

#304AB2 #B25730 #8BB230

monochromatic

#162252 #233682 #304AB2 #5069D0 #8092DD

Accessibility & contrast

On white

7.64

#304AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#304AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AB2

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AB2	#FFFFFF	#000000	##FFFFFF
##304AB2	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB6

Deuteranopia (green-blind)

#004EB0

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304ab2;
/* rgb */ color: rgb(48, 74, 178);
/* oklch */ color: oklch(45.4% 0.168 268.2);

Tailwind

colors: {
  custom: {
    50: '#7a7cca',
    500: '#304ab2',
    950: '#000000',
  },
}

SCSS

$custom: #304ab2;
$custom-light: #7a7cca;
$custom-dark: #000000;

JSON

{
  "hex": "#304ab2",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 178
  },
  "hsl": {
    "h": 228,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.45395,
    "c": 0.16792,
    "h": 268.2
  },
  "luminance": 0.0874
}

Semantic roles & 50–950 ramp

primary

#304AB2

secondary

#C6B678

accent

#C247E1

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #304AB2

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

Preview Lab → · Contrast checker → · Palette generator →