#304D9C#304D9C

#304D9C is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.3% C 0.133 H 266.0°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#304D9C
RGB	rgb(48, 77, 156)
HSL	hsl(224, 53%, 40%)
HSV	hsv(224, 69%, 61%)
CMYK	cmyk(69.2%, 50.6%, 0%, 38.8%)
CIE-LAB	lab(34.67, 16.61, -46.34)
CIE-LCH	lch(34.67, 49.23, 289.72°)
OKLab	oklab(44.28% -0.0094 -0.133)
OKLCH	oklch(44.28% 0.133 266)
XYZ	xyz(9.8715, 8.3355, 32.5347)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304D9C #9C7F30

analogous

#30839C #304D9C #49309C

triadic

#304D9C #9C304D #4D9C30

tetradic

#304D9C #9C3083 #9C7F30 #309C49

square

#304D9C #9C3083 #9C7F30 #309C49

split-complementary

#304D9C #9C4930 #839C30

monochromatic

#131F3E #22366D #304D9C #4467C5 #738DD4

Accessibility & contrast

On white

7.87

#304D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#304D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304D9C

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304D9C	#FFFFFF	#000000	##FFFFFF
##304D9C	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20579F

Deuteranopia (green-blind)

#004D9A

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304d9c;
/* rgb */ color: rgb(48, 77, 156);
/* oklch */ color: oklch(44.3% 0.133 266.0);

Tailwind

colors: {
  custom: {
    50: '#757eba',
    500: '#304d9c',
    950: '#000000',
  },
}

SCSS

$custom: #304d9c;
$custom-light: #757eba;
$custom-dark: #000000;

JSON

{
  "hex": "#304d9c",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 156
  },
  "hsl": {
    "h": 223.889,
    "s": 52.941,
    "l": 40
  },
  "oklch": {
    "l": 0.44275,
    "c": 0.13329,
    "h": 266
  },
  "luminance": 0.08336
}

Semantic roles & 50–950 ramp

primary

#304D9C

secondary

#BCA66C

accent

#B54BDC

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #304D9C

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

Preview Lab → · Contrast checker → · Palette generator →