#304CB2#304CB2

#304CB2 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.8% C 0.165 H 267.7°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#304CB2
RGB	rgb(48, 76, 178)
HSL	hsl(227, 58%, 44%)
HSV	hsv(227, 73%, 70%)
CMYK	cmyk(73%, 57.3%, 0%, 30.2%)
CIE-LAB	lab(36.00, 25.53, -57.33)
CIE-LCH	lch(36.00, 62.76, 294.01°)
OKLab	oklab(45.79% -0.0068 -0.1653)
OKLCH	oklch(45.79% 0.165 267.7)
XYZ	xyz(11.8365, 9.0104, 43.2262)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304CB2 #B29630

analogous

#308DB2 #304CB2 #5530B2

triadic

#304CB2 #B2304C #4CB230

tetradic

#304CB2 #B2308D #B29630 #30B255

square

#304CB2 #B2308D #B29630 #30B255

split-complementary

#304CB2 #B25530 #8DB230

monochromatic

#162352 #233782 #304CB2 #506BD0 #8094DD

Accessibility & contrast

On white

7.49

#304CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#304CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304CB2

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304CB2	#FFFFFF	#000000	##FFFFFF
##304CB2	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB5

Deuteranopia (green-blind)

#004FB0

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #304cb2;
/* rgb */ color: rgb(48, 76, 178);
/* oklch */ color: oklch(45.8% 0.165 267.7);

Tailwind

colors: {
  custom: {
    50: '#7a7dca',
    500: '#304cb2',
    950: '#000000',
  },
}

SCSS

$custom: #304cb2;
$custom-light: #7a7dca;
$custom-dark: #000000;

JSON

{
  "hex": "#304cb2",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 178
  },
  "hsl": {
    "h": 227.077,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4579,
    "c": 0.16544,
    "h": 267.7
  },
  "luminance": 0.09012
}

Semantic roles & 50–950 ramp

primary

#304CB2

secondary

#C6B578

accent

#C047E1

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #304CB2

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

Preview Lab → · Contrast checker → · Palette generator →