#0505FF Color

#0505FF is rgb(5, 5, 255) in RGB, hsl(240, 100%, 51%) in HSL, and about cmyk(98%, 98%, 0%, 0%) in CMYK. It has no registered color name of its own — the closest is Blue (#0000FF), below the threshold most people can see at ΔE 1.03. White text is the more readable choice on this background.

#0505FF

HEX#0505FF

RGBrgb(5, 5, 255)

HSLhsl(240, 100%, 51%)

HSVhsv(240, 98%, 100%)

CMYKcmyk(98%, 98%, 0%, 0%)

OKLCHoklch(45.4% 0.312 264.4)

LABlab(29.92% 67.53 -111.43)

LCHlch(29.92% 130.30 301.21)

What #0505FF Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #0505FF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Blue#0000FFΔE 1.03 Ultramarine#3F00FFΔE 4.99 Indigo (Color Wheel)#4000FFΔE 5.15 Ultramarine Blue(caran D'ache)#2111EFΔE 9.56 Han Purple#5218FAΔE 11.93 Electric Indigo#6F00FFΔE 15.2

Browse the full index of named colors A-Z or every blue in the library.

#0505FF Channel Values

How #0505FF breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 5 · G 5 · B 255	8-bit channels as sent to the display
HSL	H 240° · S 100% · L 51%	Easiest model for building lighter and darker variants
HSV	H 240° · S 98% · V 100%	Matches the picker in most design tools
CMYK	C 98% · M 98% · Y 0% · K 0%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	8.49:1 vs white · 2.47:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #0505FF background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text8.49:1AA normal AA large AAA normal

Fails AABlack text2.47:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #0505FF in the contrast checker.

Colors That Go With #0505FF

Pairings derived from color-wheel relationships. The complementary color sits opposite #0505FF; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #0505FF

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #0505FF.

How #0505FF Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#0505FF

Protanopia#0505FF

Protanomaly#0505FF

Deuteranopia#0505FF

Deuteranomaly#0505FF

Tritanopia#006464

Tritanomaly#004EB8

Achromatopsia#4D4D4D

Test a full palette in the color blindness simulator.

Using #0505FF in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-0505ff: #0505FF;

CSS backgroundbackground-color: #0505FF;

Tailwind configcolors: { 'color-0505ff': '#0505FF' }

SwiftUIColor(red: 0.020, green: 0.020, blue: 1.000)

Android XML<color name="color_0505ff">#0505FF</color>

SVG fillfill="#0505FF"

More Blue Colors

#0505FF sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

052f4a 05051a 054a76 035096 06061d 032b45 07193b 030712 0769a6 024a70 081335 020618 132c77 2111ef 2f3e4d 3f3fd9 54626f 6a5acd 8585ff a091f3 c2c2ff dee9f2 000033 002e57

#0505FF Frequently Asked Questions

What color is #0505FF?

#0505FF is a mid-tone blue — rgb(5, 5, 255) in RGB and hsl(240, 100%, 51%) in HSL. It carries no registered color name of its own; the closest named color is Blue (#0000FF), which is below the threshold most people can see at a CIE76 distance of 1.03.

What is the RGB value of #0505FF?

#0505FF is rgb(5, 5, 255) — red 5, green 5, and blue 255 on the 0-255 scale.

What is the CMYK value of #0505FF?

#0505FF converts to approximately cmyk(98%, 98%, 0%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #0505FF be black or white?

White text is the more readable choice. #0505FF scores 8.49:1 against white and 2.47:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #0505FF as a CSS color keyword?

No. #0505FF is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is blue (#0000FF) at a CIE76 distance of 1.03, which is below the threshold most people can see.

Open #0505FF in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every blue in the color library, the guide to shades of blue, or the full color library.