#304FA6#304FA6

#304FA6 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.5% C 0.145 H 266.0°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#304FA6
RGB	rgb(48, 79, 166)
HSL	hsl(224, 55%, 42%)
HSV	hsv(224, 71%, 65%)
CMYK	cmyk(71.1%, 52.4%, 0%, 34.9%)
CIE-LAB	lab(35.93, 19.05, -50.31)
CIE-LCH	lch(35.93, 53.80, 290.73°)
OKLab	oklab(45.45% -0.0101 -0.1446)
OKLCH	oklch(45.45% 0.145 266)
XYZ	xyz(10.8954, 8.9724, 37.2266)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FA6 #A68730

analogous

#308AA6 #304FA6 #4C30A6

triadic

#304FA6 #A6304F #4FA630

tetradic

#304FA6 #A6308A #A68730 #30A64C

square

#304FA6 #A6308A #A68730 #30A64C

split-complementary

#304FA6 #A64C30 #8AA630

monochromatic

#152247 #223877 #304FA6 #496BCA #7891D8

Accessibility & contrast

On white

7.51

#304FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#304FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FA6

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FA6	#FFFFFF	#000000	##FFFFFF
##304FA6	1.00	7.51	2.79	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#175AA9

Deuteranopia (green-blind)

#004FA4

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304fa6;
/* rgb */ color: rgb(48, 79, 166);
/* oklch */ color: oklch(45.5% 0.145 266.0);

Tailwind

colors: {
  custom: {
    50: '#777fc1',
    500: '#304fa6',
    950: '#000000',
  },
}

SCSS

$custom: #304fa6;
$custom-light: #777fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#304fa6",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 166
  },
  "hsl": {
    "h": 224.237,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45454,
    "c": 0.14496,
    "h": 266
  },
  "luminance": 0.08974
}

Semantic roles & 50–950 ramp

primary

#304FA6

secondary

#C0AC71

accent

#B749DE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304FA6

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

Preview Lab → · Contrast checker → · Palette generator →