#304EC3#304EC3

#304EC3 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.6% C 0.186 H 267.6°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#304EC3
RGB	rgb(48, 78, 195)
HSL	hsl(228, 60%, 48%)
HSV	hsv(228, 75%, 76%)
CMYK	cmyk(75.4%, 60%, 0%, 23.5%)
CIE-LAB	lab(37.87, 30.53, -64.27)
CIE-LCH	lch(37.87, 71.16, 295.41°)
OKLab	oklab(47.6% -0.0078 -0.1857)
OKLCH	oklch(47.6% 0.186 267.6)
XYZ	xyz(13.7902, 10.0158, 52.8256)
Luminance	0.1002 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EC3 #C3A530

analogous

#3098C3 #304EC3 #5B30C3

triadic

#304EC3 #C3304E #4EC330

tetradic

#304EC3 #C33098 #C3A530 #30C35B

square

#304EC3 #C33098 #C3A530 #30C35B

split-complementary

#304EC3 #C35B30 #98C330

monochromatic

#182761 #243A92 #304EC3 #5A73D6 #8B9DE2

Accessibility & contrast

On white

6.99

#304EC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.00

#304EC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #304EC3

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EC3	#FFFFFF	#000000	##FFFFFF
##304EC3	1.00	6.99	3.00	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C7

Deuteranopia (green-blind)

#0052C1

Tritanopia (blue-blind)

#006C81

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #304ec3;
/* rgb */ color: rgb(48, 78, 195);
/* oklch */ color: oklch(47.6% 0.186 267.6);

Tailwind

colors: {
  custom: {
    50: '#7e7fd6',
    500: '#304ec3',
    950: '#000000',
  },
}

SCSS

$custom: #304ec3;
$custom-light: #7e7fd6;
$custom-dark: #000000;

JSON

{
  "hex": "#304ec3",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 195
  },
  "hsl": {
    "h": 227.755,
    "s": 60.494,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47604,
    "c": 0.18582,
    "h": 267.6
  },
  "luminance": 0.10017
}

Semantic roles & 50–950 ramp

primary

#304EC3

secondary

#CCBD82

accent

#C344E4

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #304EC3

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

Preview Lab → · Contrast checker → · Palette generator →