#304E9F#304E9F

#304E9F is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.7% C 0.136 H 265.8°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#304E9F
RGB	rgb(48, 78, 159)
HSL	hsl(224, 54%, 41%)
HSV	hsv(224, 70%, 62%)
CMYK	cmyk(69.8%, 50.9%, 0%, 37.6%)
CIE-LAB	lab(35.16, 17.08, -47.36)
CIE-LCH	lch(35.16, 50.35, 289.83°)
OKLab	oklab(44.71% -0.0099 -0.1359)
OKLCH	oklch(44.71% 0.136 265.8)
XYZ	xyz(10.1991, 8.5793, 33.9126)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304E9F #9F8130

analogous

#30859F #304E9F #4A309F

triadic

#304E9F #9F304E #4E9F30

tetradic

#304E9F #9F3085 #9F8130 #309F4A

square

#304E9F #9F3085 #9F8130 #309F4A

split-complementary

#304E9F #9F4A30 #859F30

monochromatic

#142041 #223770 #304E9F #4568C7 #748ED5

Accessibility & contrast

On white

7.73

#304E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#304E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304E9F

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304E9F	#FFFFFF	#000000	##FFFFFF
##304E9F	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F58A2

Deuteranopia (green-blind)

#004E9D

Tritanopia (blue-blind)

#00616F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304e9f;
/* rgb */ color: rgb(48, 78, 159);
/* oklch */ color: oklch(44.7% 0.136 265.8);

Tailwind

colors: {
  custom: {
    50: '#767fbc',
    500: '#304e9f',
    950: '#000000',
  },
}

SCSS

$custom: #304e9f;
$custom-light: #767fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#304e9f",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 159
  },
  "hsl": {
    "h": 223.784,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44713,
    "c": 0.1363,
    "h": 265.8
  },
  "luminance": 0.0858
}

Semantic roles & 50–950 ramp

primary

#304E9F

secondary

#BDA86E

accent

#B54BDD

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #304E9F

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

Preview Lab → · Contrast checker → · Palette generator →