#0000CC Color

#0000CC is rgb(0, 0, 204) in RGB, hsl(240, 100%, 40%) in HSL, and about cmyk(100%, 100%, 0%, 20%) in CMYK. It has no registered color name of its own — the closest is Medium Blue (#0000CD), indistinguishable to the eye at ΔE 0.43. White text is the more readable choice on this background.

#0000CC

HEX#0000CC

RGBrgb(0, 0, 204)

HSLhsl(240, 100%, 40%)

HSVhsv(240, 100%, 80%)

CMYKcmyk(100%, 100%, 0%, 20%)

OKLCHoklch(38.2% 0.265 264.1)

LABlab(22.52% 57.72 -94.69)

LCHlch(22.52% 110.89 301.36)

What #0000CC 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 #0000CC, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Blue#0000CDΔE 0.43 Ultramarine Blue(caran D'ache)#2111EFΔE 12.01 Han Purple#5218FAΔE 15.77 Neon Blue#1B03A3ΔE 19.79 Indigo (Color Wheel)#4000FFΔE 20.09 Ultramarine#3F00FFΔE 20.11

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

#0000CC Channel Values

How #0000CC 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 0 · G 0 · B 204	8-bit channels as sent to the display
HSL	H 240° · S 100% · L 40%	Easiest model for building lighter and darker variants
HSV	H 240° · S 100% · V 80%	Matches the picker in most design tools
CMYK	C 100% · M 100% · Y 0% · K 20%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	11.22:1 vs white · 1.87:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #0000CC 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 text11.22:1AA normal AA large AAA normal

Fails AABlack text1.87:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #0000CC in the contrast checker.

Colors That Go With #0000CC

Pairings derived from color-wheel relationships. The complementary color sits opposite #0000CC; 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 #0000CC

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 #0000CC.

How #0000CC 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#0000CC

Protanopia#0000CC

Protanomaly#0000CC

Deuteranopia#0000CC

Deuteranomaly#0000CC

Tritanopia#004E4E

Tritanomaly#003C92

Achromatopsia#3B3B3B

Test a full palette in the color blindness simulator.

Using #0000CC in Code

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

CSS custom property--color-0000cc: #0000CC;

CSS backgroundbackground-color: #0000CC;

Tailwind configcolors: { 'color-0000cc': '#0000CC' }

SwiftUIColor(red: 0.000, green: 0.000, blue: 0.800)

Android XML<color name="color_0000cc">#0000CC</color>

SVG fillfill="#0000CC"

More Blue Colors

#0000CC sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

0000cd 0000bd 0000db 0000b3 0000e6 00009e 0000eb 00009c 0000f0 000099 0000f5 000094 0066ff 0b10a2 182d3e 2424b7 336084 45b1e8 5c7ee6 73c2fb 8c92ac abb5bf cad5e2 e7f5fe

#0000CC Frequently Asked Questions

What color is #0000CC?

#0000CC is a mid-tone blue — rgb(0, 0, 204) in RGB and hsl(240, 100%, 40%) in HSL. It carries no registered color name of its own; the closest named color is Medium Blue (#0000CD), which is indistinguishable to the eye at a CIE76 distance of 0.43.

What is the RGB value of #0000CC?

#0000CC is rgb(0, 0, 204) — red 0, green 0, and blue 204 on the 0-255 scale.

What is the CMYK value of #0000CC?

#0000CC converts to approximately cmyk(100%, 100%, 0%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #0000CC be black or white?

White text is the more readable choice. #0000CC scores 11.22:1 against white and 1.87:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #0000CC as a CSS color keyword?

No. #0000CC 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 mediumblue (#0000CD) at a CIE76 distance of 0.43, which is indistinguishable to the eye.

Open #0000CC 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.