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#66A387 Color

#66A387 is rgb(102, 163, 135) in RGB, hsl(152, 25%, 52%) in HSL, and about cmyk(37%, 0%, 17%, 36%) in CMYK. It has no registered color name of its own — the closest is Oxley (#6D9A79), clearly related but distinguishable side by side at ΔE 6.56. Black text is the more readable choice on this background.

#66A387
HEX#66A387
RGBrgb(102, 163, 135)
HSLhsl(152, 25%, 52%)
HSVhsv(152, 37%, 64%)
CMYKcmyk(37%, 0%, 17%, 36%)
OKLCHoklch(66.6% 0.076 163.6)
LABlab(62.24% -25.51 8.06)
LCHlch(62.24% 26.75 162.46)

What #66A387 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 #66A387, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Oxley#6D9A79ΔE 6.56Polished Pine#5DA493ΔE 6.65Green Sheen#6EAEA1ΔE 9.43Shiny Shamrock#5FA778ΔE 10.93Forest Green (Crayola)#5FA777ΔE 11.44Russian Green#679267ΔE 11.94

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

#66A387 Channel Values

How #66A387 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 102 · G 163 · B 1358-bit channels as sent to the display
HSLH 152° · S 25% · L 52%Easiest model for building lighter and darker variants
HSVH 152° · S 37% · V 64%Matches the picker in most design tools
CMYKC 37% · M 0% · Y 17% · K 36%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.94:1 vs white · 7.15:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #66A387 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 text2.94:1AA normal AA large AAA normal
TextBlack text7.15:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #66A387 in the contrast checker.

Colors That Go With #66A387

Pairings derived from color-wheel relationships. The complementary color sits opposite #66A387; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#66A387
Complementary
#A36683
Analogous
#66A368
Analogous
#66A1A3
Triadic
#8766A3
Triadic
#A38766
Split comp.
#A366A1
Split comp.
#A36866

Tints & Shades of #66A387

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

#7CB198
#8FBCA7
#A6C9B9
#B9D5C8
#CFE2D9
#E2EEE8

Shades

#568F75
#497963
#3B6350
#305041
#22392F
#15231D

Want a full 50-950 ramp with semantic roles? Generate design tokens from #66A387.

How #66A387 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#66A387
Protanopia#9B9B87
Protanomaly#899E87
Deuteranopia#929289
Deuteranomaly#839988
Tritanopia#6CA0A0
Tritanomaly#69A197
Achromatopsia#979797

Test a full palette in the color blindness simulator.

Using #66A387 in Code

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

CSS custom property--color-66a387: #66A387;
CSS backgroundbackground-color: #66A387;
Tailwind configcolors: { 'color-66a387': '#66A387' }
SwiftUIColor(red: 0.400, green: 0.639, blue: 0.529)
Android XML<color name="color_66a387">#66A387</color>
SVG fillfill="#66A387"

More Green Colors

#66A387 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#66A387 Frequently Asked Questions

What color is #66A387?

#66A387 is a mid-tone green — rgb(102, 163, 135) in RGB and hsl(152, 25%, 52%) in HSL. It carries no registered color name of its own; the closest named color is Oxley (#6D9A79), which is clearly related but distinguishable side by side at a CIE76 distance of 6.56.

What is the RGB value of #66A387?

#66A387 is rgb(102, 163, 135) — red 102, green 163, and blue 135 on the 0-255 scale.

What is the CMYK value of #66A387?

#66A387 converts to approximately cmyk(37%, 0%, 17%, 36%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #66A387 be black or white?

Black text is the more readable choice. #66A387 scores 2.94:1 against white and 7.15:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #66A387 as a CSS color keyword?

No. #66A387 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 darkseagreen (#8FBC8F) at a CIE76 distance of 14.26, which is visibly different.

Open #66A387 in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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