Start generating
0000FF

#0000FF Blue

#0000FF is a dark, vivid blue named Blue. In the RGB color model it is made of 0.0% red, 0.0% green and 100.0% blue (rgb(0, 0, 255)). Its HSL value is 240° hue, 100% saturation and 50% lightness, and in CMYK it is 100% cyan, 100% magenta, 0% yellow and 0% black. #0000FF is a cool color. White text reads best on it, with a contrast ratio of 8.59:1.

Make a palette with #0000FF

#0000FF color conversion

HEX
RGB
HSL
HSB / HSV
HWB
CMYK
XYZ
CIELAB
CIELCh
CIELUV
OKLCH

Variations of #0000FF

Shades

Mixed with black: richer and darker.

0000FF0000DE0000BE00009E00008000006300004800002E000016000003

Tints

Mixed with white: lighter and softer.

0000FF0541FF2260FF3E78FF598EFF74A3FF8FB6FFAAC9FFC6DBFFE2EDFF

Tones

Mixed with gray: calmer and more muted.

0000FF002FF30B43E81C51DC2C5BD03B64C4496CB75772AA65779D727C8F

Hues

The same lightness and chroma, rotated around the color wheel.

006171005F79005D82005A8F0055A30000FF3C00EF5500DF6600CE7500BC8000A9

Temperatures

Cooler on the left, warmer on the right.

0033FF002DFF0026FF001EFF0013FF0000FF0825F91536F32142ED2C4BE63753E0

#0000FF color harmonies

Complementary

The opposite hue — maximum contrast and energy.

0000FFFFFF00
Open in generator →

Split complementary

The two hues next to the complement — contrast with less tension.

0000FFFF800080FF00
Open in generator →

Analogous

Neighbouring hues — calm, cohesive and natural.

0000FF0080FF8000FF
Open in generator →

Triadic

Three hues evenly spaced at 120° — vibrant yet balanced.

0000FFFF000000FF00
Open in generator →

Tetradic

Two complementary pairs — rich, best with one dominant color.

0000FFFF00FFFFFF0000FF00
Open in generator →

Square

Four hues spaced at 90° — bold and playful.

0000FFFF0080FFFF0000FF80
Open in generator →

#0000FF for color-blind viewers (and dogs)

How #0000FF appears with each type of color vision deficiency (Machado 2009 model) — and to your dog. Try the dog vision simulator →

  • Dog vision 89% similarHow dogs see it · simulated as #003DFB
  • Protanopia 79% similar1.3% of men, 0.02% of women · simulated as #0059FF
  • Protanomaly 84% similar1.3% of men, 0.02% of women · simulated as #004BFF
  • Deuteranopia 89% similar1.2% of men, 0.01% of women · simulated as #003DFB
  • Deuteranomaly 91% similar5% of men, 0.35% of women · simulated as #0036FD
  • Tritanopia 54% similar0.001% of men, 0.03% of women · simulated as #006B96
  • Tritanomaly 83% similar0.0001% of men, 0.0001% of women · simulated as #0046D7
  • Achromatopsia 37% similar0.003% of men, 0.003% of women · simulated as #4C4C4C
  • Achromatomaly 62% similar0.001% of men, 0.001% of women · simulated as #424296

#0000FF contrast checker

AaThe quick brown fox jumps over the lazy dog.
8.59:1 Very good#0000FF text on white
AA normalPassAAA normalPass
AA largePassAAA largePass
AaThe quick brown fox jumps over the lazy dog.
2.44:1 Very poor#0000FF text on black
AA normalFailAAA normalFail
AA largeFailAAA largeFail

Need another background? Pick any pair in the palette generator and open the contrast panel.

Colors similar to #0000FF

Palettes with #0000FF

No curated palettes contain #0000FF yet. Build one in the generator →

#0000FF in CSS

/* Blue */
.color { color: #0000FF; }
.background { background-color: #0000FF; }
.border { border: 1px solid #0000FF; }

/* Other notations */
color: rgb(0 0 255);
color: hsl(240 100% 50%);
color: oklch(0.452 0.313 264.1);

#0000FF FAQ

What color is #0000FF?

#0000FF is a dark, vivid blue. Its closest named color is Blue. It belongs to the blue color family and is a cool color.

What is the RGB value of #0000FF?

#0000FF is rgb(0, 0, 255) in RGB, hsl(240, 100%, 50%) in HSL and cmyk(100%, 100%, 0%, 0%) in CMYK.

What is the complementary color of #0000FF?

The complementary color of #0000FF is #FFFF00, which sits opposite it on the color wheel.

Which text color works on #0000FF?

White text has the best contrast on #0000FF: 8.59:1, which meets the WCAG AA requirement of 4.5:1 for normal text.

Is #0000FF a warm or cool color?

#0000FF is a cool color.