#304FB7#304FB7

#304FB7 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.8% C 0.169 H 267.0°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#304FB7
RGB	rgb(48, 79, 183)
HSL	hsl(226, 58%, 45%)
HSV	hsv(226, 74%, 72%)
CMYK	cmyk(73.8%, 56.8%, 0%, 28.2%)
CIE-LAB	lab(37.18, 25.43, -58.36)
CIE-LCH	lch(37.18, 63.66, 293.54°)
OKLab	oklab(46.8% -0.0088 -0.1683)
OKLCH	oklch(46.8% 0.169 267)
XYZ	xyz(12.5592, 9.6379, 45.9890)
Luminance	0.0964 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FB7 #B79830

analogous

#3093B7 #304FB7 #5430B7

triadic

#304FB7 #B7304F #4FB730

tetradic

#304FB7 #B73093 #B79830 #30B754

square

#304FB7 #B73093 #B79830 #30B754

split-complementary

#304FB7 #B75430 #93B730

monochromatic

#172556 #233A87 #304FB7 #5270D2 #8398DE

Accessibility & contrast

On white

7.17

#304FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#304FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FB7

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FB7	#FFFFFF	#000000	##FFFFFF
##304FB7	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBB

Deuteranopia (green-blind)

#0051B5

Tritanopia (blue-blind)

#00697B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304fb7;
/* rgb */ color: rgb(48, 79, 183);
/* oklch */ color: oklch(46.8% 0.169 267.0);

Tailwind

colors: {
  custom: {
    50: '#7b7fcd',
    500: '#304fb7',
    950: '#000000',
  },
}

SCSS

$custom: #304fb7;
$custom-light: #7b7fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#304fb7",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 183
  },
  "hsl": {
    "h": 226.222,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.46796,
    "c": 0.16852,
    "h": 267
  },
  "luminance": 0.09639
}

Semantic roles & 50–950 ramp

primary

#304FB7

secondary

#C8B67B

accent

#BE46E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #304FB7

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

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