#304D9F#304D9F

#304D9F is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.5% C 0.138 H 266.2°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#304D9F
RGB	rgb(48, 77, 159)
HSL	hsl(224, 54%, 41%)
HSV	hsv(224, 70%, 62%)
CMYK	cmyk(69.8%, 51.6%, 0%, 37.6%)
CIE-LAB	lab(34.88, 17.74, -47.82)
CIE-LCH	lch(34.88, 51.00, 290.36°)
OKLab	oklab(44.5% -0.009 -0.1373)
OKLCH	oklch(44.5% 0.138 266.2)
XYZ	xyz(10.1286, 8.4383, 33.8891)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304D9F #9F8230

analogous

#30849F #304D9F #4A309F

triadic

#304D9F #9F304D #4D9F30

tetradic

#304D9F #9F3084 #9F8230 #309F4A

square

#304D9F #9F3084 #9F8230 #309F4A

split-complementary

#304D9F #9F4A30 #849F30

monochromatic

#141F41 #223670 #304D9F #4567C7 #748ED5

Accessibility & contrast

On white

7.81

#304D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#304D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304D9F

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304D9F	#FFFFFF	#000000	##FFFFFF
##304D9F	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C57A2

Deuteranopia (green-blind)

#004D9D

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304d9f;
/* rgb */ color: rgb(48, 77, 159);
/* oklch */ color: oklch(44.5% 0.138 266.2);

Tailwind

colors: {
  custom: {
    50: '#767ebc',
    500: '#304d9f',
    950: '#000000',
  },
}

SCSS

$custom: #304d9f;
$custom-light: #767ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#304d9f",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 159
  },
  "hsl": {
    "h": 224.324,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44499,
    "c": 0.1376,
    "h": 266.2
  },
  "luminance": 0.08439
}

Semantic roles & 50–950 ramp

primary

#304D9F

secondary

#BDA86E

accent

#B74BDD

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #304D9F

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

Preview Lab → · Contrast checker → · Palette generator →