#306CC5#306CC5

#306CC5 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 53.9% C 0.152 H 258.4°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#306CC5
RGB	rgb(48, 108, 197)
HSL	hsl(216, 61%, 48%)
HSV	hsv(216, 76%, 77%)
CMYK	cmyk(75.6%, 45.2%, 0%, 22.7%)
CIE-LAB	lab(46.15, 11.89, -52.03)
CIE-LCH	lch(46.15, 53.37, 282.88°)
OKLab	oklab(53.94% -0.0306 -0.1491)
OKLCH	oklch(53.94% 0.152 258.4)
XYZ	xyz(16.6558, 15.3828, 54.9039)
Luminance	0.1538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306CC5 #C58930

analogous

#30B6C5 #306CC5 #3F30C5

triadic

#306CC5 #C5306C #6CC530

tetradic

#306CC5 #C530B6 #C58930 #30C53F

square

#306CC5 #C530B6 #C58930 #30C53F

split-complementary

#306CC5 #C53F30 #B6C530

monochromatic

#183663 #245194 #306CC5 #5B8DD7 #8CAFE3

Accessibility & contrast

On white

5.15

#306CC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#306CC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306CC5

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306CC5	#FFFFFF	#000000	##FFFFFF
##306CC5	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E75C8

Deuteranopia (green-blind)

#1E67C3

Tritanopia (blue-blind)

#00818F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #306cc5;
/* rgb */ color: rgb(48, 108, 197);
/* oklch */ color: oklch(53.9% 0.152 258.4);

Tailwind

colors: {
  custom: {
    50: '#7d95d7',
    500: '#306cc5',
    950: '#000000',
  },
}

SCSS

$custom: #306cc5;
$custom-light: #7d95d7;
$custom-dark: #000000;

JSON

{
  "hex": "#306cc5",
  "rgb": {
    "r": 48,
    "g": 108,
    "b": 197
  },
  "hsl": {
    "h": 215.839,
    "s": 60.816,
    "l": 48.039
  },
  "oklch": {
    "l": 0.53937,
    "c": 0.15224,
    "h": 258.4
  },
  "luminance": 0.15385
}

Semantic roles & 50–950 ramp

primary

#306CC5

secondary

#CDB084

accent

#A344E4

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #306CC5

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

Preview Lab → · Contrast checker → · Palette generator →