#304F9D#304F9D

#304F9D is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.8% C 0.132 H 265.2°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#304F9D
RGB	rgb(48, 79, 157)
HSL	hsl(223, 53%, 40%)
HSV	hsv(223, 69%, 62%)
CMYK	cmyk(69.4%, 49.7%, 0%, 38.4%)
CIE-LAB	lab(35.31, 15.66, -45.92)
CIE-LCH	lch(35.31, 48.52, 288.83°)
OKLab	oklab(44.78% -0.0111 -0.1317)
OKLCH	oklch(44.78% 0.132 265.2)
XYZ	xyz(10.0986, 8.6537, 33.0299)
Luminance	0.0866 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304F9D #9D7E30

analogous

#30859D #304F9D #48309D

triadic

#304F9D #9D304F #4F9D30

tetradic

#304F9D #9D3085 #9D7E30 #309D48

square

#304F9D #9D3085 #9D7E30 #309D48

split-complementary

#304F9D #9D4830 #859D30

monochromatic

#13203F #22376E #304F9D #4469C6 #738FD4

Accessibility & contrast

On white

7.69

#304F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#304F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304F9D

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304F9D	#FFFFFF	#000000	##FFFFFF
##304F9D	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2458A0

Deuteranopia (green-blind)

#044E9B

Tritanopia (blue-blind)

#00616E

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304f9d;
/* rgb */ color: rgb(48, 79, 157);
/* oklch */ color: oklch(44.8% 0.132 265.2);

Tailwind

colors: {
  custom: {
    50: '#757fba',
    500: '#304f9d',
    950: '#000000',
  },
}

SCSS

$custom: #304f9d;
$custom-light: #757fba;
$custom-dark: #000000;

JSON

{
  "hex": "#304f9d",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 157
  },
  "hsl": {
    "h": 222.936,
    "s": 53.171,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44782,
    "c": 0.13216,
    "h": 265.2
  },
  "luminance": 0.08655
}

Semantic roles & 50–950 ramp

primary

#304F9D

secondary

#BCA66D

accent

#B34BDD

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #304F9D

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

Preview Lab → · Contrast checker → · Palette generator →