#304BBF#304BBF

#304BBF is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.7% C 0.184 H 268.2°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#304BBF
RGB	rgb(48, 75, 191)
HSL	hsl(229, 60%, 47%)
HSV	hsv(229, 75%, 75%)
CMYK	cmyk(74.9%, 60.7%, 0%, 25.1%)
CIE-LAB	lab(36.78, 31.00, -63.71)
CIE-LCH	lch(36.78, 70.85, 295.95°)
OKLab	oklab(46.69% -0.0058 -0.1841)
OKLCH	oklch(46.69% 0.184 268.2)
XYZ	xyz(13.1357, 9.4207, 50.4062)
Luminance	0.0942 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304BBF #BFA430

analogous

#3093BF #304BBF #5C30BF

triadic

#304BBF #BF304B #4BBF30

tetradic

#304BBF #BF3093 #BFA430 #30BF5C

square

#304BBF #BF3093 #BFA430 #30BF5C

split-complementary

#304BBF #BF5C30 #93BF30

monochromatic

#17255D #24388E #304BBF #576FD5 #8899E1

Accessibility & contrast

On white

7.28

#304BBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#304BBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304BBF

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304BBF	#FFFFFF	#000000	##FFFFFF
##304BBF	1.00	7.28	2.88	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC3

Deuteranopia (green-blind)

#0050BD

Tritanopia (blue-blind)

#00697E

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304bbf;
/* rgb */ color: rgb(48, 75, 191);
/* oklch */ color: oklch(46.7% 0.184 268.2);

Tailwind

colors: {
  custom: {
    50: '#7d7dd3',
    500: '#304bbf',
    950: '#000000',
  },
}

SCSS

$custom: #304bbf;
$custom-light: #7d7dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#304bbf",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 191
  },
  "hsl": {
    "h": 228.671,
    "s": 59.833,
    "l": 46.863
  },
  "oklch": {
    "l": 0.46694,
    "c": 0.18415,
    "h": 268.2
  },
  "luminance": 0.09422
}

Semantic roles & 50–950 ramp

primary

#304BBF

secondary

#CBBD80

accent

#C545E3

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0914

muted

#7C7B83

Preview Lab

Preview with #304BBF

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

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