#306DB9#306DB9

#306DB9 is a mid, vivid cyan. Relative luminance 0.151; OKLCH L 53.4% C 0.135 H 255.5°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#306DB9
RGB	rgb(48, 109, 185)
HSL	hsl(213, 59%, 46%)
HSV	hsv(213, 74%, 73%)
CMYK	cmyk(74.1%, 41.1%, 0%, 27.5%)
CIE-LAB	lab(45.73, 6.77, -45.77)
CIE-LCH	lch(45.73, 46.27, 278.41°)
OKLab	oklab(53.37% -0.0339 -0.1307)
OKLCH	oklch(53.37% 0.135 255.5)
XYZ	xyz(15.4413, 15.0667, 47.9839)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#306DB9 #B97C30

analogous

#30B1B9 #306DB9 #3830B9

triadic

#306DB9 #B9306D #6DB930

tetradic

#306DB9 #B930B1 #B97C30 #30B938

square

#306DB9 #B930B1 #B97C30 #30B938

split-complementary

#306DB9 #B93830 #B1B930

monochromatic

#173458 #235088 #306DB9 #548CD3 #84ADDF

Accessibility & contrast

On white

5.23

#306DB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#306DB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #306DB9

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##306DB9	#FFFFFF	#000000	##FFFFFF
##306DB9	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4973BC

Deuteranopia (green-blind)

#3266B7

Tritanopia (blue-blind)

#007F8A

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #306db9;
/* rgb */ color: rgb(48, 109, 185);
/* oklch */ color: oklch(53.4% 0.135 255.5);

Tailwind

colors: {
  custom: {
    50: '#7a96ce',
    500: '#306db9',
    950: '#000000',
  },
}

SCSS

$custom: #306db9;
$custom-light: #7a96ce;
$custom-dark: #000000;

JSON

{
  "hex": "#306db9",
  "rgb": {
    "r": 48,
    "g": 109,
    "b": 185
  },
  "hsl": {
    "h": 213.285,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.53373,
    "c": 0.13507,
    "h": 255.5
  },
  "luminance": 0.15068
}

Semantic roles & 50–950 ramp

primary

#306DB9

secondary

#C9A77C

accent

#9C46E2

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #306DB9

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

Preview Lab → · Contrast checker → · Palette generator →