#304FB1#304FB1

#304FB1 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.3% C 0.160 H 266.7°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#304FB1
RGB	rgb(48, 79, 177)
HSL	hsl(226, 57%, 44%)
HSV	hsv(226, 73%, 69%)
CMYK	cmyk(72.9%, 55.4%, 0%, 30.6%)
CIE-LAB	lab(36.73, 23.18, -55.56)
CIE-LCH	lch(36.73, 60.20, 292.65°)
OKLab	oklab(46.31% -0.0092 -0.16)
OKLCH	oklch(46.31% 0.16 266.7)
XYZ	xyz(11.9480, 9.3934, 42.7699)
Luminance	0.0940 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FB1 #B19230

analogous

#3090B1 #304FB1 #5130B1

triadic

#304FB1 #B1304F #4FB130

tetradic

#304FB1 #B13090 #B19230 #30B151

square

#304FB1 #B13090 #B19230 #30B151

split-complementary

#304FB1 #B15130 #90B130

monochromatic

#162451 #233A81 #304FB1 #4F6ECF #7F95DC

Accessibility & contrast

On white

7.29

#304FB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#304FB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FB1

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FB1	#FFFFFF	#000000	##FFFFFF
##304FB1	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)

#005DB4

Deuteranopia (green-blind)

#0051AF

Tritanopia (blue-blind)

#006778

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #304fb1;
/* rgb */ color: rgb(48, 79, 177);
/* oklch */ color: oklch(46.3% 0.160 266.7);

Tailwind

colors: {
  custom: {
    50: '#7a7fc9',
    500: '#304fb1',
    950: '#000000',
  },
}

SCSS

$custom: #304fb1;
$custom-light: #7a7fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#304fb1",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 177
  },
  "hsl": {
    "h": 225.581,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.46312,
    "c": 0.1603,
    "h": 266.7
  },
  "luminance": 0.09395
}

Semantic roles & 50–950 ramp

primary

#304FB1

secondary

#C5B378

accent

#BC47E1

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #304FB1

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

Preview Lab → · Contrast checker → · Palette generator →