#304DA4#304DA4

#304DA4 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.9% C 0.145 H 266.6°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#304DA4
RGB	rgb(48, 77, 164)
HSL	hsl(225, 55%, 42%)
HSV	hsv(225, 71%, 64%)
CMYK	cmyk(70.7%, 53%, 0%, 35.7%)
CIE-LAB	lab(35.23, 19.62, -50.25)
CIE-LCH	lch(35.23, 53.94, 291.33°)
OKLab	oklab(44.88% -0.0085 -0.1444)
OKLCH	oklch(44.88% 0.145 266.6)
XYZ	xyz(10.5713, 8.6154, 36.2206)
Luminance	0.0862 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DA4 #A48730

analogous

#3087A4 #304DA4 #4D30A4

triadic

#304DA4 #A4304D #4DA430

tetradic

#304DA4 #A43087 #A48730 #30A44D

square

#304DA4 #A43087 #A48730 #30A44D

split-complementary

#304DA4 #A44D30 #87A430

monochromatic

#142145 #223775 #304DA4 #4868C9 #778FD7

Accessibility & contrast

On white

7.71

#304DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#304DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DA4

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DA4	#FFFFFF	#000000	##FFFFFF
##304DA4	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1358A7

Deuteranopia (green-blind)

#004EA2

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304da4;
/* rgb */ color: rgb(48, 77, 164);
/* oklch */ color: oklch(44.9% 0.145 266.6);

Tailwind

colors: {
  custom: {
    50: '#777ec0',
    500: '#304da4',
    950: '#000000',
  },
}

SCSS

$custom: #304da4;
$custom-light: #777ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#304da4",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 164
  },
  "hsl": {
    "h": 225,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.44879,
    "c": 0.1447,
    "h": 266.6
  },
  "luminance": 0.08616
}

Semantic roles & 50–950 ramp

primary

#304DA4

secondary

#BFAC70

accent

#B94ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304DA4

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

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