#304FA4#304FA4

#304FA4 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.3% C 0.142 H 265.8°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#304FA4
RGB	rgb(48, 79, 164)
HSL	hsl(224, 55%, 42%)
HSV	hsv(224, 71%, 64%)
CMYK	cmyk(70.7%, 51.8%, 0%, 35.7%)
CIE-LAB	lab(35.79, 18.29, -49.34)
CIE-LCH	lch(35.79, 52.63, 290.34°)
OKLab	oklab(45.3% -0.0103 -0.1418)
OKLCH	oklch(45.3% 0.142 265.8)
XYZ	xyz(10.7134, 8.8996, 36.2679)
Luminance	0.0890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FA4 #A48530

analogous

#3089A4 #304FA4 #4B30A4

triadic

#304FA4 #A4304F #4FA430

tetradic

#304FA4 #A43089 #A48530 #30A44B

square

#304FA4 #A43089 #A48530 #30A44B

split-complementary

#304FA4 #A44B30 #89A430

monochromatic

#142145 #223875 #304FA4 #486AC9 #7791D7

Accessibility & contrast

On white

7.55

#304FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#304FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FA4

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FA4	#FFFFFF	#000000	##FFFFFF
##304FA4	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B5AA7

Deuteranopia (green-blind)

#004FA2

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304fa4;
/* rgb */ color: rgb(48, 79, 164);
/* oklch */ color: oklch(45.3% 0.142 265.8);

Tailwind

colors: {
  custom: {
    50: '#777fc0',
    500: '#304fa4',
    950: '#000000',
  },
}

SCSS

$custom: #304fa4;
$custom-light: #777fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#304fa4",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 164
  },
  "hsl": {
    "h": 223.966,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.45302,
    "c": 0.14213,
    "h": 265.8
  },
  "luminance": 0.08901
}

Semantic roles & 50–950 ramp

primary

#304FA4

secondary

#BFAA70

accent

#B64ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304FA4

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

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