#669999 Color

#669999 is rgb(102, 153, 153) in RGB, hsl(180, 20%, 50%) in HSL, and about cmyk(33%, 0%, 0%, 40%) in CMYK. It has no registered color name of its own — the closest is Cadet Blue (#5F9EA0), very hard to tell apart at ΔE 3.93. Black text is the more readable choice on this background.

#669999

HEX#669999

RGBrgb(102, 153, 153)

HSLhsl(180, 20%, 50%)

HSVhsv(180, 33%, 60%)

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

OKLCHoklch(64.7% 0.054 195.9)

LABlab(59.64% -17.66 -5.73)

LCHlch(59.64% 18.57 197.98)

What #669999 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 #669999, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Cadet Blue#5F9EA0ΔE 3.93 Steel Teal#5F8A8FΔE 6.43 Blue Lagoon#4C9C9CΔE 8.18 Wintergreen Dream#56887DΔE 9.24 Green Sheen#6EAEA1ΔE 10.72 Polished Pine#5DA493ΔE 11.77

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

#669999 Channel Values

How #669999 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 153	8-bit channels as sent to the display
HSL	H 180° · S 20% · L 50%	Easiest model for building lighter and darker variants
HSV	H 180° · S 33% · V 60%	Matches the picker in most design tools
CMYK	C 33% · M 0% · Y 0% · K 40%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.19:1 vs white · 6.58:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #669999 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 text3.19:1AA normal AA large AAA normal

TextBlack text6.58:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #669999 in the contrast checker.

Colors That Go With #669999

Pairings derived from color-wheel relationships. The complementary color sits opposite #669999; 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 #669999

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 #669999.

How #669999 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#669999

Protanopia#929299

Protanomaly#839599

Deuteranopia#8B8B9A

Deuteranomaly#7E919A

Tritanopia#669999

Tritanomaly#669999

Achromatopsia#909090

Test a full palette in the color blindness simulator.

Using #669999 in Code

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

CSS custom property--color-669999: #669999;

CSS backgroundbackground-color: #669999;

Tailwind configcolors: { 'color-669999': '#669999' }

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

Android XML<color name="color_669999">#669999</color>

SVG fillfill="#669999"

More Teal Colors

#669999 sits in the teal family. These are its neighbours across that family's full range, each with its own breakdown.

66cccc 61ffff 66ffff 60d7d3 67e4de 5f9ea0 6bdaff 5f8a8f 6bffff 5ebee4 73a9c2 5cffff 87cfd9 a7f1e9 c5e8ed dfecec 004157 007a7a 00b2b3 022f2e 12303b 1db4a5 2bcaca 40e0d0

#669999 Frequently Asked Questions

What color is #669999?

#669999 is a mid-tone teal — rgb(102, 153, 153) in RGB and hsl(180, 20%, 50%) in HSL. It carries no registered color name of its own; the closest named color is Cadet Blue (#5F9EA0), which is very hard to tell apart at a CIE76 distance of 3.93.

What is the RGB value of #669999?

#669999 is rgb(102, 153, 153) — red 102, green 153, and blue 153 on the 0-255 scale.

What is the CMYK value of #669999?

#669999 converts to approximately cmyk(33%, 0%, 0%, 40%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #669999 be black or white?

Black text is the more readable choice. #669999 scores 3.19:1 against white and 6.58:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #669999 as a CSS color keyword?

No. #669999 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 cadetblue (#5F9EA0) at a CIE76 distance of 3.93, which is very hard to tell apart.

Open #669999 in a Tool

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