#669900 Color

#669900 is rgb(102, 153, 0) in RGB, hsl(80, 100%, 30%) in HSL, and about cmyk(33%, 0%, 100%, 40%) in CMYK. It has no registered color name of its own — the closest is Green (RYB) (#66B032), visibly different at ΔE 12.07. Black text is the more readable choice on this background.

#669900

HEX#669900

RGBrgb(102, 153, 0)

HSLhsl(80, 100%, 30%)

HSVhsv(80, 100%, 60%)

CMYKcmyk(33%, 0%, 100%, 40%)

OKLCHoklch(62.3% 0.166 129.4)

LABlab(57.84% -32.19 59.07)

LCHlch(57.84% 67.27 118.59)

What #669900 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 #669900, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Green (RYB)#66B032ΔE 12.07 Olive Drab#6B8E23ΔE 12.99 Microsoft Green#7DB700ΔE 14.06 Napier Green#2A8000ΔE 17.46 Maximum Green#5E8C31ΔE 18.32 Slimy Green#299617ΔE 18.4

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

#669900 Channel Values

How #669900 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 102 · G 153 · B 0	8-bit channels as sent to the display
HSL	H 80° · S 100% · L 30%	Easiest model for building lighter and darker variants
HSV	H 80° · S 100% · V 60%	Matches the picker in most design tools
CMYK	C 33% · M 0% · Y 100% · K 40%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.43:1 vs white · 6.12:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #669900 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.

Fails AAWhite text3.43:1AA normal AA large AAA normal

TextBlack text6.12:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #669900 in the contrast checker.

Colors That Go With #669900

Pairings derived from color-wheel relationships. The complementary color sits opposite #669900; 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 #669900

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 #669900.

How #669900 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#669900

Protanopia#929203

Protanomaly#839502

Deuteranopia#8B8B10

Deuteranomaly#7E910A

Tritanopia#749090

Tritanomaly#6E9472

Achromatopsia#8A8A8A

Test a full palette in the color blindness simulator.

Using #669900 in Code

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

CSS custom property--color-669900: #669900;

CSS backgroundbackground-color: #669900;

Tailwind configcolors: { 'color-669900': '#669900' }

SwiftUIColor(red: 0.400, green: 0.600, blue: 0.000)

Android XML<color name="color_669900">#669900</color>

SVG fillfill="#669900"

More Green Colors

#669900 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

669933 65e765 669966 64e986 66b032 62f962 66cc00 61ff61 66cc33 5fd85f 66cc66 5fa778 7cfc00 99cc33 a9ba9d c2ffeb d9e650 002e00 009150 00eb00 114611 24ff24 33ff99 497d00

#669900 Frequently Asked Questions

What color is #669900?

#669900 is a dark green — rgb(102, 153, 0) in RGB and hsl(80, 100%, 30%) in HSL. It carries no registered color name of its own; the closest named color is Green (RYB) (#66B032), which is visibly different at a CIE76 distance of 12.07.

What is the RGB value of #669900?

#669900 is rgb(102, 153, 0) — red 102, green 153, and blue 0 on the 0-255 scale.

What is the CMYK value of #669900?

#669900 converts to approximately cmyk(33%, 0%, 100%, 40%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #669900 be black or white?

Black text is the more readable choice. #669900 scores 3.43:1 against white and 6.12:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #669900 as a CSS color keyword?

No. #669900 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 olivedrab (#6B8E23) at a CIE76 distance of 12.99, which is visibly different.

Open #669900 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 green in the color library, the guide to shades of green, or the full color library.