#304EA9#304EA9

#304EA9 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.5% C 0.150 H 266.6°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#304EA9
RGB	rgb(48, 78, 169)
HSL	hsl(225, 56%, 43%)
HSV	hsv(225, 72%, 66%)
CMYK	cmyk(71.6%, 53.8%, 0%, 33.7%)
CIE-LAB	lab(35.87, 20.84, -52.20)
CIE-LCH	lch(35.87, 56.21, 291.76°)
OKLab	oklab(45.48% -0.0089 -0.1502)
OKLCH	oklch(45.48% 0.15 266.6)
XYZ	xyz(11.1022, 8.9406, 38.6690)
Luminance	0.0894 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EA9 #A98B30

analogous

#308AA9 #304EA9 #4F30A9

triadic

#304EA9 #A9304E #4EA930

tetradic

#304EA9 #A9308A #A98B30 #30A94F

square

#304EA9 #A9308A #A98B30 #30A94F

split-complementary

#304EA9 #A94F30 #8AA930

monochromatic

#15224A #223879 #304EA9 #4A6BCC #7A92D9

Accessibility & contrast

On white

7.53

#304EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#304EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EA9

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EA9	#FFFFFF	#000000	##FFFFFF
##304EA9	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B5AAC

Deuteranopia (green-blind)

#004FA7

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304ea9;
/* rgb */ color: rgb(48, 78, 169);
/* oklch */ color: oklch(45.5% 0.150 266.6);

Tailwind

colors: {
  custom: {
    50: '#787fc3',
    500: '#304ea9',
    950: '#000000',
  },
}

SCSS

$custom: #304ea9;
$custom-light: #787fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#304ea9",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 169
  },
  "hsl": {
    "h": 225.124,
    "s": 55.76,
    "l": 42.549
  },
  "oklch": {
    "l": 0.45476,
    "c": 0.15046,
    "h": 266.6
  },
  "luminance": 0.08942
}

Semantic roles & 50–950 ramp

primary

#304EA9

secondary

#C2AE73

accent

#BA49DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #304EA9

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

Preview Lab → · Contrast checker → · Palette generator →