#304EBC#304EBC

#304EBC is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.0% C 0.177 H 267.4°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#304EBC
RGB	rgb(48, 78, 188)
HSL	hsl(227, 59%, 46%)
HSV	hsv(227, 74%, 74%)
CMYK	cmyk(74.5%, 58.5%, 0%, 26.3%)
CIE-LAB	lab(37.31, 27.94, -61.09)
CIE-LCH	lch(37.31, 67.18, 294.58°)
OKLab	oklab(47.01% -0.0079 -0.1763)
OKLCH	oklch(47.01% 0.177 267.4)
XYZ	xyz(13.0173, 9.7066, 48.7547)
Luminance	0.0971 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EBC #BC9E30

analogous

#3094BC #304EBC #5830BC

triadic

#304EBC #BC304E #4EBC30

tetradic

#304EBC #BC3094 #BC9E30 #30BC58

square

#304EBC #BC3094 #BC9E30 #30BC58

split-complementary

#304EBC #BC5830 #94BC30

monochromatic

#17265A #243A8B #304EBC #5571D4 #869AE0

Accessibility & contrast

On white

7.14

#304EBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#304EBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EBC

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EBC	#FFFFFF	#000000	##FFFFFF
##304EBC	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC0

Deuteranopia (green-blind)

#0052BA

Tritanopia (blue-blind)

#006A7D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #304ebc;
/* rgb */ color: rgb(48, 78, 188);
/* oklch */ color: oklch(47.0% 0.177 267.4);

Tailwind

colors: {
  custom: {
    50: '#7c7fd1',
    500: '#304ebc',
    950: '#000000',
  },
}

SCSS

$custom: #304ebc;
$custom-light: #7c7fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#304ebc",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 188
  },
  "hsl": {
    "h": 227.143,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.47012,
    "c": 0.17651,
    "h": 267.4
  },
  "luminance": 0.09708
}

Semantic roles & 50–950 ramp

primary

#304EBC

secondary

#CABA7E

accent

#C145E3

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #304EBC

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

Preview Lab → · Contrast checker → · Palette generator →