#304FA5#304FA5

#304FA5 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.4% C 0.144 H 265.9°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#304FA5
RGB	rgb(48, 79, 165)
HSL	hsl(224, 55%, 42%)
HSV	hsv(224, 71%, 65%)
CMYK	cmyk(70.9%, 52.1%, 0%, 35.3%)
CIE-LAB	lab(35.86, 18.67, -49.83)
CIE-LCH	lch(35.86, 53.21, 290.54°)
OKLab	oklab(45.38% -0.0102 -0.1432)
OKLCH	oklch(45.38% 0.144 265.9)
XYZ	xyz(10.8041, 8.9359, 36.7454)
Luminance	0.0894 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FA5 #A58630

analogous

#308AA5 #304FA5 #4C30A5

triadic

#304FA5 #A5304F #4FA530

tetradic

#304FA5 #A5308A #A58630 #30A54C

square

#304FA5 #A5308A #A58630 #30A54C

split-complementary

#304FA5 #A54C30 #8AA530

monochromatic

#142246 #223876 #304FA5 #486BCA #7891D8

Accessibility & contrast

On white

7.53

#304FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#304FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FA5

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FA5	#FFFFFF	#000000	##FFFFFF
##304FA5	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#195AA8

Deuteranopia (green-blind)

#004FA3

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304fa5;
/* rgb */ color: rgb(48, 79, 165);
/* oklch */ color: oklch(45.4% 0.144 265.9);

Tailwind

colors: {
  custom: {
    50: '#777fc0',
    500: '#304fa5',
    950: '#000000',
  },
}

SCSS

$custom: #304fa5;
$custom-light: #777fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#304fa5",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 165
  },
  "hsl": {
    "h": 224.103,
    "s": 54.93,
    "l": 41.765
  },
  "oklch": {
    "l": 0.45378,
    "c": 0.14355,
    "h": 265.9
  },
  "luminance": 0.08937
}

Semantic roles & 50–950 ramp

primary

#304FA5

secondary

#C0AB71

accent

#B74ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304FA5

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

Preview Lab → · Contrast checker → · Palette generator →