#304EB5#304EB5

#304EB5 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.4% C 0.167 H 267.2°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#304EB5
RGB	rgb(48, 78, 181)
HSL	hsl(226, 58%, 45%)
HSV	hsv(226, 73%, 71%)
CMYK	cmyk(73.5%, 56.9%, 0%, 29%)
CIE-LAB	lab(36.77, 25.34, -57.86)
CIE-LCH	lch(36.77, 63.17, 293.65°)
OKLab	oklab(46.43% -0.0082 -0.1668)
OKLCH	oklch(46.43% 0.167 267.2)
XYZ	xyz(12.2809, 9.4120, 44.8766)
Luminance	0.0941 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EB5 #B59730

analogous

#3091B5 #304EB5 #5430B5

triadic

#304EB5 #B5304E #4EB530

tetradic

#304EB5 #B53091 #B59730 #30B554

square

#304EB5 #B53091 #B59730 #30B554

split-complementary

#304EB5 #B55430 #91B530

monochromatic

#162454 #233985 #304EB5 #516ED1 #8296DE

Accessibility & contrast

On white

7.29

#304EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#304EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EB5

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EB5	#FFFFFF	#000000	##FFFFFF
##304EB5	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB9

Deuteranopia (green-blind)

#0051B3

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304eb5;
/* rgb */ color: rgb(48, 78, 181);
/* oklch */ color: oklch(46.4% 0.167 267.2);

Tailwind

colors: {
  custom: {
    50: '#7b7fcc',
    500: '#304eb5',
    950: '#000000',
  },
}

SCSS

$custom: #304eb5;
$custom-light: #7b7fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#304eb5",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 181
  },
  "hsl": {
    "h": 226.466,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.46433,
    "c": 0.16704,
    "h": 267.2
  },
  "luminance": 0.09413
}

Semantic roles & 50–950 ramp

primary

#304EB5

secondary

#C7B67A

accent

#BE46E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #304EB5

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

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