#304BC9#304BC9

#304BC9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.6% C 0.197 H 268.3°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#304BC9
RGB	rgb(48, 75, 201)
HSL	hsl(229, 61%, 49%)
HSV	hsv(229, 76%, 79%)
CMYK	cmyk(76.1%, 62.7%, 0%, 21.2%)
CIE-LAB	lab(37.62, 34.65, -68.18)
CIE-LCH	lch(37.62, 76.48, 296.94°)
OKLab	oklab(47.57% -0.0059 -0.1971)
OKLCH	oklch(47.57% 0.197 268.3)
XYZ	xyz(14.2740, 9.8760, 56.4010)
Luminance	0.0988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304BC9 #C9AE30

analogous

#3098C9 #304BC9 #6230C9

triadic

#304BC9 #C9304B #4BC930

tetradic

#304BC9 #C93098 #C9AE30 #30C962

square

#304BC9 #C93098 #C9AE30 #30C962

split-complementary

#304BC9 #C96230 #98C930

monochromatic

#182666 #243998 #304BC9 #5E73D8 #8F9EE4

Accessibility & contrast

On white

7.06

#304BC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#304BC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304BC9

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304BC9	#FFFFFF	#000000	##FFFFFF
##304BC9	1.00	7.06	2.98	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060CD

Deuteranopia (green-blind)

#0051C7

Tritanopia (blue-blind)

#006C83

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #304bc9;
/* rgb */ color: rgb(48, 75, 201);
/* oklch */ color: oklch(47.6% 0.197 268.3);

Tailwind

colors: {
  custom: {
    50: '#807dda',
    500: '#304bc9',
    950: '#000000',
  },
}

SCSS

$custom: #304bc9;
$custom-light: #807dda;
$custom-dark: #000000;

JSON

{
  "hex": "#304bc9",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 201
  },
  "hsl": {
    "h": 229.412,
    "s": 61.446,
    "l": 48.824
  },
  "oklch": {
    "l": 0.47572,
    "c": 0.19723,
    "h": 268.3
  },
  "luminance": 0.09878
}

Semantic roles & 50–950 ramp

primary

#304BC9

secondary

#CFC286

accent

#C843E5

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #304BC9

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

Preview Lab → · Contrast checker → · Palette generator →