#304EC9#304EC9

#304EC9 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.1% C 0.194 H 267.7°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#304EC9
RGB	rgb(48, 78, 201)
HSL	hsl(228, 61%, 49%)
HSV	hsv(228, 76%, 79%)
CMYK	cmyk(76.1%, 61.2%, 0%, 21.2%)
CIE-LAB	lab(38.36, 32.74, -66.96)
CIE-LCH	lch(38.36, 74.53, 296.05°)
OKLab	oklab(48.12% -0.0078 -0.1935)
OKLCH	oklch(48.12% 0.194 267.7)
XYZ	xyz(14.4823, 10.2926, 56.4704)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EC9 #C9AB30

analogous

#309BC9 #304EC9 #5F30C9

triadic

#304EC9 #C9304E #4EC930

tetradic

#304EC9 #C9309B #C9AB30 #30C95F

square

#304EC9 #C9309B #C9AB30 #30C95F

split-complementary

#304EC9 #C95F30 #9BC930

monochromatic

#182866 #243B98 #304EC9 #5E76D8 #8FA0E4

Accessibility & contrast

On white

6.87

#304EC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#304EC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #304EC9

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EC9	#FFFFFF	#000000	##FFFFFF
##304EC9	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CD

Deuteranopia (green-blind)

#0053C7

Tritanopia (blue-blind)

#006E84

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #304ec9;
/* rgb */ color: rgb(48, 78, 201);
/* oklch */ color: oklch(48.1% 0.194 267.7);

Tailwind

colors: {
  custom: {
    50: '#7f7fda',
    500: '#304ec9',
    950: '#000000',
  },
}

SCSS

$custom: #304ec9;
$custom-light: #7f7fda;
$custom-dark: #000000;

JSON

{
  "hex": "#304ec9",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 201
  },
  "hsl": {
    "h": 228.235,
    "s": 61.446,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48122,
    "c": 0.1937,
    "h": 267.7
  },
  "luminance": 0.10294
}

Semantic roles & 50–950 ramp

primary

#304EC9

secondary

#CFC186

accent

#C543E5

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #304EC9

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

Preview Lab → · Contrast checker → · Palette generator →