#000066 Color

#000066 is rgb(0, 0, 102) in RGB, hsl(240, 100%, 20%) in HSL, and about cmyk(100%, 100%, 0%, 60%) in CMYK. It has no registered color name of its own — the closest is Persian Indigo (#32127A), visibly different at ΔE 10.51. White text is the more readable choice on this background.

#000066

HEX#000066

RGBrgb(0, 0, 102)

HSLhsl(240, 100%, 20%)

HSVhsv(240, 100%, 40%)

CMYKcmyk(100%, 100%, 0%, 60%)

OKLCHoklch(23.1% 0.16 264.1)

LABlab(7.28% 34.75 -57.13)

LCHlch(7.28% 66.86 301.31)

What #000066 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 #000066, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Persian Indigo#32127AΔE 10.51 Navy#000080ΔE 12.52 Phthalo Blue#000F89ΔE 12.77 Midnight Blue#191970ΔE 13.21 Resolution Blue#002387ΔE 15.05 Imperial Blue#002395ΔE 16.17

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

#000066 Channel Values

How #000066 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 102	8-bit channels as sent to the display
HSL	H 240° · S 100% · L 20%	Easiest model for building lighter and darker variants
HSV	H 240° · S 100% · V 40%	Matches the picker in most design tools
CMYK	C 100% · M 100% · Y 0% · K 60%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	17.62:1 vs white · 1.19:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #000066 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 text17.62:1AA normal AA large AAA normal

Fails AABlack text1.19:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #000066 in the contrast checker.

Colors That Go With #000066

Pairings derived from color-wheel relationships. The complementary color sits opposite #000066; 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 #000066

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 #000066.

How #000066 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#000066

Protanopia#000066

Protanomaly#000066

Deuteranopia#000066

Deuteranomaly#000066

Tritanopia#002323

Tritanomaly#001A47

Achromatopsia#191919

Test a full palette in the color blindness simulator.

Using #000066 in Code

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

CSS custom property--color-000066: #000066;

CSS backgroundbackground-color: #000066;

Tailwind configcolors: { 'color-000066': '#000066' }

SwiftUIColor(red: 0.000, green: 0.000, blue: 0.400)

Android XML<color name="color_000066">#000066</color>

SVG fillfill="#000066"

More Blue Colors

#000066 sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000070 000061 00007a 00005c 000080 000057 00008b 000052 000094 000047 000099 000042 0038a7 0505ff 132c77 2111ef 2f3e4d 3f3fd9 54626f 6a5acd 8585ff a091f3 c2c2ff dee9f2

#000066 Frequently Asked Questions

What color is #000066?

#000066 is a dark blue — rgb(0, 0, 102) in RGB and hsl(240, 100%, 20%) in HSL. It carries no registered color name of its own; the closest named color is Persian Indigo (#32127A), which is visibly different at a CIE76 distance of 10.51.

What is the RGB value of #000066?

#000066 is rgb(0, 0, 102) — red 0, green 0, and blue 102 on the 0-255 scale.

What is the CMYK value of #000066?

#000066 converts to approximately cmyk(100%, 100%, 0%, 60%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #000066 be black or white?

White text is the more readable choice. #000066 scores 17.62:1 against white and 1.19:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #000066 as a CSS color keyword?

No. #000066 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 navy (#000080) at a CIE76 distance of 12.52, which is visibly different.

Open #000066 in a Tool

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