#304BBA#304BBA

#304BBA is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.3% C 0.177 H 268.1°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#304BBA
RGB	rgb(48, 75, 186)
HSL	hsl(228, 59%, 46%)
HSV	hsv(228, 74%, 73%)
CMYK	cmyk(74.2%, 59.7%, 0%, 27.1%)
CIE-LAB	lab(36.37, 29.16, -61.44)
CIE-LCH	lch(36.37, 68.01, 295.39°)
OKLab	oklab(46.26% -0.0058 -0.1774)
OKLCH	oklch(46.26% 0.178 268.1)
XYZ	xyz(12.5949, 9.2044, 47.5577)
Luminance	0.0921 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304BBA #BA9F30

analogous

#3090BA #304BBA #5A30BA

triadic

#304BBA #BA304B #4BBA30

tetradic

#304BBA #BA3090 #BA9F30 #30BA5A

square

#304BBA #BA3090 #BA9F30 #30BA5A

split-complementary

#304BBA #BA5A30 #90BA30

monochromatic

#172459 #233789 #304BBA #546DD3 #8597DF

Accessibility & contrast

On white

7.39

#304BBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#304BBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304BBA

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304BBA	#FFFFFF	#000000	##FFFFFF
##304BBA	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBE

Deuteranopia (green-blind)

#004FB8

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304bba;
/* rgb */ color: rgb(48, 75, 186);
/* oklch */ color: oklch(46.3% 0.177 268.1);

Tailwind

colors: {
  custom: {
    50: '#7c7dd0',
    500: '#304bba',
    950: '#000000',
  },
}

SCSS

$custom: #304bba;
$custom-light: #7c7dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#304bba",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 186
  },
  "hsl": {
    "h": 228.261,
    "s": 58.974,
    "l": 45.882
  },
  "oklch": {
    "l": 0.46264,
    "c": 0.1775,
    "h": 268.1
  },
  "luminance": 0.09206
}

Semantic roles & 50–950 ramp

primary

#304BBA

secondary

#C9BA7D

accent

#C446E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #304BBA

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

Preview Lab → · Contrast checker → · Palette generator →