#304FBA#304FBA

#304FBA is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.0% C 0.173 H 267.1°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#304FBA
RGB	rgb(48, 79, 186)
HSL	hsl(227, 59%, 46%)
HSV	hsv(227, 74%, 73%)
CMYK	cmyk(74.2%, 57.5%, 0%, 27.1%)
CIE-LAB	lab(37.42, 26.55, -59.75)
CIE-LCH	lch(37.42, 65.38, 293.95°)
OKLab	oklab(47.04% -0.0087 -0.1724)
OKLCH	oklch(47.04% 0.173 267.1)
XYZ	xyz(12.8747, 9.7641, 47.6510)
Luminance	0.0977 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FBA #BA9B30

analogous

#3094BA #304FBA #5630BA

triadic

#304FBA #BA304F #4FBA30

tetradic

#304FBA #BA3094 #BA9B30 #30BA56

square

#304FBA #BA3094 #BA9B30 #30BA56

split-complementary

#304FBA #BA5630 #94BA30

monochromatic

#172659 #233A89 #304FBA #5471D3 #8599DF

Accessibility & contrast

On white

7.11

#304FBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#304FBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FBA

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FBA	#FFFFFF	#000000	##FFFFFF
##304FBA	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBE

Deuteranopia (green-blind)

#0052B8

Tritanopia (blue-blind)

#006A7D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #304fba;
/* rgb */ color: rgb(48, 79, 186);
/* oklch */ color: oklch(47.0% 0.173 267.1);

Tailwind

colors: {
  custom: {
    50: '#7c7fd0',
    500: '#304fba',
    950: '#000000',
  },
}

SCSS

$custom: #304fba;
$custom-light: #7c7fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#304fba",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 186
  },
  "hsl": {
    "h": 226.522,
    "s": 58.974,
    "l": 45.882
  },
  "oklch": {
    "l": 0.47042,
    "c": 0.17258,
    "h": 267.1
  },
  "luminance": 0.09766
}

Semantic roles & 50–950 ramp

primary

#304FBA

secondary

#C9B87D

accent

#BF46E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #304FBA

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

Preview Lab → · Contrast checker → · Palette generator →