#306DC3#306DC3

#306DC3 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.0% C 0.148 H 257.6°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#306DC3
RGB	rgb(48, 109, 195)
HSL	hsl(215, 60%, 48%)
HSV	hsv(215, 75%, 76%)
CMYK	cmyk(75.4%, 44.1%, 0%, 23.5%)
CIE-LAB	lab(46.32, 10.51, -50.61)
CIE-LCH	lch(46.32, 51.69, 281.73°)
OKLab	oklab(54.02% -0.0318 -0.145)
OKLCH	oklch(54.02% 0.148 257.6)
XYZ	xyz(16.5343, 15.5039, 53.7403)
Luminance	0.1551 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306DC3 #C38630

analogous

#30B7C3 #306DC3 #3C30C3

triadic

#306DC3 #C3306D #6DC330

tetradic

#306DC3 #C330B7 #C38630 #30C33C

square

#306DC3 #C330B7 #C38630 #30C33C

split-complementary

#306DC3 #C33C30 #B7C330

monochromatic

#183661 #245292 #306DC3 #5A8ED6 #8BAFE2

Accessibility & contrast

On white

5.12

#306DC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#306DC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306DC3

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306DC3	#FFFFFF	#000000	##FFFFFF
##306DC3	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4275C6

Deuteranopia (green-blind)

#2467C1

Tritanopia (blue-blind)

#00818E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #306dc3;
/* rgb */ color: rgb(48, 109, 195);
/* oklch */ color: oklch(54.0% 0.148 257.6);

Tailwind

colors: {
  custom: {
    50: '#7c96d6',
    500: '#306dc3',
    950: '#000000',
  },
}

SCSS

$custom: #306dc3;
$custom-light: #7c96d6;
$custom-dark: #000000;

JSON

{
  "hex": "#306dc3",
  "rgb": {
    "r": 48,
    "g": 109,
    "b": 195
  },
  "hsl": {
    "h": 215.102,
    "s": 60.494,
    "l": 47.647
  },
  "oklch": {
    "l": 0.54023,
    "c": 0.14841,
    "h": 257.6
  },
  "luminance": 0.15506
}

Semantic roles & 50–950 ramp

primary

#306DC3

secondary

#CCAE82

accent

#A144E4

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #306DC3

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

Preview Lab → · Contrast checker → · Palette generator →