#304AA4#304AA4

#304AA4 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.3% C 0.149 H 267.7°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#304AA4
RGB	rgb(48, 74, 164)
HSL	hsl(227, 55%, 42%)
HSV	hsv(227, 71%, 64%)
CMYK	cmyk(70.7%, 54.9%, 0%, 35.7%)
CIE-LAB	lab(34.41, 21.62, -51.58)
CIE-LCH	lch(34.41, 55.93, 292.74°)
OKLab	oklab(44.26% -0.0059 -0.1484)
OKLCH	oklch(44.26% 0.149 267.7)
XYZ	xyz(10.3662, 8.2052, 36.1522)
Luminance	0.0821 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AA4 #A48A30

analogous

#3084A4 #304AA4 #5030A4

triadic

#304AA4 #A4304A #4AA430

tetradic

#304AA4 #A43084 #A48A30 #30A450

square

#304AA4 #A43084 #A48A30 #30A450

split-complementary

#304AA4 #A45030 #84A430

monochromatic

#141F45 #223575 #304AA4 #4865C9 #778DD7

Accessibility & contrast

On white

7.95

#304AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#304AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AA4

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AA4	#FFFFFF	#000000	##FFFFFF
##304AA4	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0256A7

Deuteranopia (green-blind)

#004CA2

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #304aa4;
/* rgb */ color: rgb(48, 74, 164);
/* oklch */ color: oklch(44.3% 0.149 267.7);

Tailwind

colors: {
  custom: {
    50: '#777cc0',
    500: '#304aa4',
    950: '#000000',
  },
}

SCSS

$custom: #304aa4;
$custom-light: #777cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#304aa4",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 164
  },
  "hsl": {
    "h": 226.552,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.44255,
    "c": 0.14855,
    "h": 267.7
  },
  "luminance": 0.08206
}

Semantic roles & 50–950 ramp

primary

#304AA4

secondary

#BFAE70

accent

#BD4ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304AA4

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

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