#304289#304289

#304289 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.5% C 0.120 H 269.7°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#304289
RGB	rgb(48, 66, 137)
HSL	hsl(228, 48%, 36%)
HSV	hsv(228, 65%, 54%)
CMYK	cmyk(65%, 51.8%, 0%, 46.3%)
CIE-LAB	lab(30.23, 16.90, -41.90)
CIE-LCH	lch(30.23, 45.18, 291.96°)
OKLab	oklab(40.48% -0.0007 -0.1201)
OKLCH	oklch(40.48% 0.12 269.7)
XYZ	xyz(7.6810, 6.3303, 24.4792)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304289 #897730

analogous

#306F89 #304289 #4B3089

triadic

#304289 #893042 #428930

tetradic

#304289 #89306F #897730 #30894B

square

#304289 #89306F #897730 #30894B

split-complementary

#304289 #894B30 #6F8930

monochromatic

#10162E #202C5C #304289 #4058B6 #697DCA

Accessibility & contrast

On white

9.27

#304289 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#304289 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304289

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304289	#FFFFFF	#000000	##FFFFFF
##304289	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4B8C

Deuteranopia (green-blind)

#024388

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #304289;
/* rgb */ color: rgb(48, 66, 137);
/* oklch */ color: oklch(40.5% 0.120 269.7);

Tailwind

colors: {
  custom: {
    50: '#7276ac',
    500: '#304289',
    950: '#000000',
  },
}

SCSS

$custom: #304289;
$custom-light: #7276ac;
$custom-dark: #000000;

JSON

{
  "hex": "#304289",
  "rgb": {
    "r": 48,
    "g": 66,
    "b": 137
  },
  "hsl": {
    "h": 227.865,
    "s": 48.108,
    "l": 36.275
  },
  "oklch": {
    "l": 0.40481,
    "c": 0.12007,
    "h": 269.7
  },
  "luminance": 0.06331
}

Semantic roles & 50–950 ramp

primary

#304289

secondary

#B2A263

accent

#BC50D8

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #304289

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

Preview Lab → · Contrast checker → · Palette generator →