#304F99#304F99

#304F99 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.5% C 0.126 H 264.7°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#304F99
RGB	rgb(48, 79, 153)
HSL	hsl(222, 52%, 39%)
HSV	hsv(222, 69%, 60%)
CMYK	cmyk(68.6%, 48.4%, 0%, 40%)
CIE-LAB	lab(35.04, 14.15, -43.94)
CIE-LCH	lch(35.04, 46.16, 287.85°)
OKLab	oklab(44.49% -0.0117 -0.1258)
OKLCH	oklch(44.49% 0.126 264.7)
XYZ	xyz(9.7627, 8.5193, 31.2607)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304F99 #997A30

analogous

#308499 #304F99 #463099

triadic

#304F99 #99304F #4F9930

tetradic

#304F99 #993084 #997A30 #309946

square

#304F99 #993084 #997A30 #309946

split-complementary

#304F99 #994630 #849930

monochromatic

#131F3C #21376A #304F99 #4269C4 #718ED2

Accessibility & contrast

On white

7.77

#304F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#304F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304F99

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304F99	#FFFFFF	#000000	##FFFFFF
##304F99	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28589C

Deuteranopia (green-blind)

#114E97

Tritanopia (blue-blind)

#00606C

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304f99;
/* rgb */ color: rgb(48, 79, 153);
/* oklch */ color: oklch(44.5% 0.126 264.7);

Tailwind

colors: {
  custom: {
    50: '#757fb7',
    500: '#304f99',
    950: '#000000',
  },
}

SCSS

$custom: #304f99;
$custom-light: #757fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#304f99",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 153
  },
  "hsl": {
    "h": 222.286,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44492,
    "c": 0.12639,
    "h": 264.7
  },
  "luminance": 0.0852
}

Semantic roles & 50–950 ramp

primary

#304F99

secondary

#BAA36B

accent

#B14CDC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #304F99

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

Preview Lab → · Contrast checker → · Palette generator →