#306CC3#306CC3

#306CC3 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.8% C 0.150 H 258.1°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#306CC3
RGB	rgb(48, 108, 195)
HSL	hsl(216, 60%, 48%)
HSV	hsv(216, 75%, 76%)
CMYK	cmyk(75.4%, 44.6%, 0%, 23.5%)
CIE-LAB	lab(46.03, 11.14, -51.07)
CIE-LCH	lch(46.03, 52.27, 282.31°)
OKLab	oklab(53.8% -0.0309 -0.1463)
OKLCH	oklch(53.8% 0.15 258.1)
XYZ	xyz(16.4282, 15.2918, 53.7050)
Luminance	0.1529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306CC3 #C38730

analogous

#30B6C3 #306CC3 #3D30C3

triadic

#306CC3 #C3306C #6CC330

tetradic

#306CC3 #C330B6 #C38730 #30C33D

square

#306CC3 #C330B6 #C38730 #30C33D

split-complementary

#306CC3 #C33D30 #B6C330

monochromatic

#183661 #245192 #306CC3 #5A8DD6 #8BAFE2

Accessibility & contrast

On white

5.17

#306CC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#306CC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306CC3

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306CC3	#FFFFFF	#000000	##FFFFFF
##306CC3	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4074C6

Deuteranopia (green-blind)

#2167C1

Tritanopia (blue-blind)

#00818E

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #306cc3;
/* rgb */ color: rgb(48, 108, 195);
/* oklch */ color: oklch(53.8% 0.150 258.1);

Tailwind

colors: {
  custom: {
    50: '#7c95d6',
    500: '#306cc3',
    950: '#000000',
  },
}

SCSS

$custom: #306cc3;
$custom-light: #7c95d6;
$custom-dark: #000000;

JSON

{
  "hex": "#306cc3",
  "rgb": {
    "r": 48,
    "g": 108,
    "b": 195
  },
  "hsl": {
    "h": 215.51,
    "s": 60.494,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53802,
    "c": 0.14957,
    "h": 258.1
  },
  "luminance": 0.15294
}

Semantic roles & 50–950 ramp

primary

#306CC3

secondary

#CCAE82

accent

#A344E4

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #306CC3

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

Preview Lab → · Contrast checker → · Palette generator →