#304CBA#304CBA

#304CBA is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.5% C 0.176 H 267.9°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#304CBA
RGB	rgb(48, 76, 186)
HSL	hsl(228, 59%, 46%)
HSV	hsv(228, 74%, 73%)
CMYK	cmyk(74.2%, 59.1%, 0%, 27.1%)
CIE-LAB	lab(36.63, 28.51, -61.02)
CIE-LCH	lch(36.63, 67.35, 295.04°)
OKLab	oklab(46.46% -0.0065 -0.1761)
OKLCH	oklch(46.46% 0.176 267.9)
XYZ	xyz(12.6632, 9.3411, 47.5805)
Luminance	0.0934 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304CBA #BA9E30

analogous

#3091BA #304CBA #5930BA

triadic

#304CBA #BA304C #4CBA30

tetradic

#304CBA #BA3091 #BA9E30 #30BA59

square

#304CBA #BA3091 #BA9E30 #30BA59

split-complementary

#304CBA #BA5930 #91BA30

monochromatic

#172459 #233889 #304CBA #546ED3 #8597DF

Accessibility & contrast

On white

7.32

#304CBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#304CBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304CBA

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304CBA	#FFFFFF	#000000	##FFFFFF
##304CBA	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBE

Deuteranopia (green-blind)

#0050B8

Tritanopia (blue-blind)

#00687B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304cba;
/* rgb */ color: rgb(48, 76, 186);
/* oklch */ color: oklch(46.5% 0.176 267.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#304cba",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 186
  },
  "hsl": {
    "h": 227.826,
    "s": 58.974,
    "l": 45.882
  },
  "oklch": {
    "l": 0.46457,
    "c": 0.17627,
    "h": 267.9
  },
  "luminance": 0.09342
}

Semantic roles & 50–950 ramp

primary

#304CBA

secondary

#C9B97D

accent

#C246E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #304CBA

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

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