#304399#304399

#304399 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.9% C 0.142 H 269.8°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#304399
RGB	rgb(48, 67, 153)
HSL	hsl(229, 52%, 39%)
HSV	hsv(229, 69%, 60%)
CMYK	cmyk(68.6%, 56.2%, 0%, 40%)
CIE-LAB	lab(31.67, 22.19, -49.37)
CIE-LCH	lch(31.67, 54.13, 294.20°)
OKLab	oklab(41.94% -0.0004 -0.142)
OKLCH	oklch(41.94% 0.142 269.8)
XYZ	xyz(8.9739, 6.9417, 30.9978)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304399 #998630

analogous

#307899 #304399 #523099

triadic

#304399 #993043 #439930

tetradic

#304399 #993078 #998630 #309952

square

#304399 #993078 #998630 #309952

split-complementary

#304399 #995230 #789930

monochromatic

#131A3C #212F6A #304399 #425AC4 #7183D2

Accessibility & contrast

On white

8.79

#304399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#304399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304399

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304399	#FFFFFF	#000000	##FFFFFF
##304399	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9C

Deuteranopia (green-blind)

#004697

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #304399;
/* rgb */ color: rgb(48, 67, 153);
/* oklch */ color: oklch(41.9% 0.142 269.8);

Tailwind

colors: {
  custom: {
    50: '#7576b8',
    500: '#304399',
    950: '#000000',
  },
}

SCSS

$custom: #304399;
$custom-light: #7576b8;
$custom-dark: #000000;

JSON

{
  "hex": "#304399",
  "rgb": {
    "r": 48,
    "g": 67,
    "b": 153
  },
  "hsl": {
    "h": 229.143,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.41939,
    "c": 0.14203,
    "h": 269.8
  },
  "luminance": 0.06943
}

Semantic roles & 50–950 ramp

primary

#304399

secondary

#BAAC6B

accent

#C24CDC

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #304399

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

Preview Lab → · Contrast checker → · Palette generator →