#304589#304589

#304589 is a dark, moderate blue. Relative luminance 0.067; OKLCH L 41.1% C 0.116 H 268.1°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#304589
RGB	rgb(48, 69, 137)
HSL	hsl(226, 48%, 36%)
HSV	hsv(226, 65%, 54%)
CMYK	cmyk(65%, 49.6%, 0%, 46.3%)
CIE-LAB	lab(31.09, 14.87, -40.52)
CIE-LCH	lch(31.09, 43.16, 290.15°)
OKLab	oklab(41.13% -0.0039 -0.1159)
OKLCH	oklch(41.13% 0.116 268.1)
XYZ	xyz(7.8609, 6.6901, 24.5391)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304589 #897430

analogous

#307289 #304589 #483089

triadic

#304589 #893045 #458930

tetradic

#304589 #893072 #897430 #308948

square

#304589 #893072 #897430 #308948

split-complementary

#304589 #894830 #728930

monochromatic

#10172E #202E5C #304589 #405CB6 #6980CA

Accessibility & contrast

On white

8.98

#304589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#304589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304589

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304589	#FFFFFF	#000000	##FFFFFF
##304589	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224D8B

Deuteranopia (green-blind)

#104588

Tritanopia (blue-blind)

#005560

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #304589;
/* rgb */ color: rgb(48, 69, 137);
/* oklch */ color: oklch(41.1% 0.116 268.1);

Tailwind

colors: {
  custom: {
    50: '#7278ac',
    500: '#304589',
    950: '#000000',
  },
}

SCSS

$custom: #304589;
$custom-light: #7278ac;
$custom-dark: #000000;

JSON

{
  "hex": "#304589",
  "rgb": {
    "r": 48,
    "g": 69,
    "b": 137
  },
  "hsl": {
    "h": 225.843,
    "s": 48.108,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41134,
    "c": 0.11601,
    "h": 268.1
  },
  "luminance": 0.06691
}

Semantic roles & 50–950 ramp

primary

#304589

secondary

#B29F63

accent

#B850D8

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #304589

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

Preview Lab → · Contrast checker → · Palette generator →