#304D9D#304D9D

#304D9D is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.3% C 0.135 H 266.1°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#304D9D
RGB	rgb(48, 77, 157)
HSL	hsl(224, 53%, 40%)
HSV	hsv(224, 69%, 62%)
CMYK	cmyk(69.4%, 51%, 0%, 38.4%)
CIE-LAB	lab(34.74, 16.99, -46.83)
CIE-LCH	lch(34.74, 49.82, 289.94°)
OKLab	oklab(44.35% -0.0093 -0.1344)
OKLCH	oklch(44.35% 0.135 266.1)
XYZ	xyz(9.9565, 8.3695, 32.9825)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304D9D #9D8030

analogous

#30839D #304D9D #4A309D

triadic

#304D9D #9D304D #4D9D30

tetradic

#304D9D #9D3083 #9D8030 #309D4A

square

#304D9D #9D3083 #9D8030 #309D4A

split-complementary

#304D9D #9D4A30 #839D30

monochromatic

#131F3F #22366E #304D9D #4467C6 #738DD4

Accessibility & contrast

On white

7.85

#304D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#304D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304D9D

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304D9D	#FFFFFF	#000000	##FFFFFF
##304D9D	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F57A0

Deuteranopia (green-blind)

#004D9B

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304d9d;
/* rgb */ color: rgb(48, 77, 157);
/* oklch */ color: oklch(44.3% 0.135 266.1);

Tailwind

colors: {
  custom: {
    50: '#767eba',
    500: '#304d9d',
    950: '#000000',
  },
}

SCSS

$custom: #304d9d;
$custom-light: #767eba;
$custom-dark: #000000;

JSON

{
  "hex": "#304d9d",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 157
  },
  "hsl": {
    "h": 224.037,
    "s": 53.171,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44349,
    "c": 0.13473,
    "h": 266.1
  },
  "luminance": 0.0837
}

Semantic roles & 50–950 ramp

primary

#304D9D

secondary

#BCA76D

accent

#B64BDD

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #304D9D

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

Preview Lab → · Contrast checker → · Palette generator →