#304AA3#304AA3

#304AA3 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.2% C 0.147 H 267.7°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#304AA3
RGB	rgb(48, 74, 163)
HSL	hsl(226, 55%, 41%)
HSV	hsv(226, 71%, 64%)
CMYK	cmyk(70.6%, 54.6%, 0%, 36.1%)
CIE-LAB	lab(34.33, 21.24, -51.10)
CIE-LCH	lch(34.33, 55.34, 292.57°)
OKLab	oklab(44.18% -0.006 -0.147)
OKLCH	oklch(44.18% 0.147 267.7)
XYZ	xyz(10.2763, 8.1693, 35.6785)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AA3 #A38930

analogous

#3084A3 #304AA3 #5030A3

triadic

#304AA3 #A3304A #4AA330

tetradic

#304AA3 #A33084 #A38930 #30A350

square

#304AA3 #A33084 #A38930 #30A350

split-complementary

#304AA3 #A35030 #84A330

monochromatic

#141F44 #223574 #304AA3 #4765C9 #778CD7

Accessibility & contrast

On white

7.97

#304AA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#304AA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AA3

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AA3	#FFFFFF	#000000	##FFFFFF
##304AA3	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0556A6

Deuteranopia (green-blind)

#004CA1

Tritanopia (blue-blind)

#005F6F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #304aa3;
/* rgb */ color: rgb(48, 74, 163);
/* oklch */ color: oklch(44.2% 0.147 267.7);

Tailwind

colors: {
  custom: {
    50: '#777cbf',
    500: '#304aa3',
    950: '#000000',
  },
}

SCSS

$custom: #304aa3;
$custom-light: #777cbf;
$custom-dark: #000000;

JSON

{
  "hex": "#304aa3",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 163
  },
  "hsl": {
    "h": 226.435,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.44176,
    "c": 0.14713,
    "h": 267.7
  },
  "luminance": 0.0817
}

Semantic roles & 50–950 ramp

primary

#304AA3

secondary

#BFAD70

accent

#BC4ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304AA3

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

Preview Lab → · Contrast checker → · Palette generator →