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#42D166 Color

#42D166 is rgb(66, 209, 102) in RGB, hsl(135, 61%, 54%) in HSL, and about cmyk(68%, 0%, 51%, 18%) in CMYK. It has no registered color name of its own — the closest is Very Light Malachite Green (#64E986), visibly different at ΔE 10.03. Black text is the more readable choice on this background.

#42D166
HEX#42D166
RGBrgb(66, 209, 102)
HSLhsl(135, 61%, 54%)
HSVhsv(135, 68%, 82%)
CMYKcmyk(68%, 0%, 51%, 18%)
OKLCHoklch(76.1% 0.191 148)
LABlab(74.65% -56.39 41.13)
LCHlch(74.65% 69.80 143.89)

What #42D166 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 #42D166, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Very Light Malachite Green#64E986ΔE 10.03Android Green#3DDC84ΔE 10.76Pastel Green#77DD77ΔE 11.44Green (Pantone)#00AD43ΔE 12.79Dark Pastel Green#03C03CΔE 13.58Emerald#50C878ΔE 14.15

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

#42D166 Channel Values

How #42D166 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 66 · G 209 · B 1028-bit channels as sent to the display
HSLH 135° · S 61% · L 54%Easiest model for building lighter and darker variants
HSVH 135° · S 68% · V 82%Matches the picker in most design tools
CMYKC 68% · M 0% · Y 51% · K 18%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.99:1 vs white · 10.54:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #42D166 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 text1.99:1AA normal AA large AAA normal
TextBlack text10.54:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #42D166 in the contrast checker.

Colors That Go With #42D166

Pairings derived from color-wheel relationships. The complementary color sits opposite #42D166; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#42D166
Complementary
#D142AD
Analogous
#66D142
Analogous
#42D1AD
Triadic
#6642D1
Triadic
#D16642
Split comp.
#AD42D1
Split comp.
#D14266

Tints & Shades of #42D166

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

#5BD77A
#78DE91
#90E4A5
#A9EAB9
#C1F0CD
#DEF7E4

Shades

#2FC153
#28A447
#21873A
#19672C
#124A20
#0B2D13

Want a full 50-950 ramp with semantic roles? Generate design tokens from #42D166.

How #42D166 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#42D166
Protanopia#C2C267
Protanomaly#9FC867
Deuteranopia#B2B26C
Deuteranomaly#92BF69
Tritanopia#61C7C7
Tritanomaly#56CBA9
Achromatopsia#B8B8B8

Test a full palette in the color blindness simulator.

Using #42D166 in Code

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

CSS custom property--color-42d166: #42D166;
CSS backgroundbackground-color: #42D166;
Tailwind configcolors: { 'color-42d166': '#42D166' }
SwiftUIColor(red: 0.259, green: 0.820, blue: 0.400)
Android XML<color name="color_42d166">#42D166</color>
SVG fillfill="#42D166"

More Green Colors

#42D166 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#42D166 Frequently Asked Questions

What color is #42D166?

#42D166 is a mid-tone green — rgb(66, 209, 102) in RGB and hsl(135, 61%, 54%) in HSL. It carries no registered color name of its own; the closest named color is Very Light Malachite Green (#64E986), which is visibly different at a CIE76 distance of 10.03.

What is the RGB value of #42D166?

#42D166 is rgb(66, 209, 102) — red 66, green 209, and blue 102 on the 0-255 scale.

What is the CMYK value of #42D166?

#42D166 converts to approximately cmyk(68%, 0%, 51%, 18%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #42D166 be black or white?

Black text is the more readable choice. #42D166 scores 1.99:1 against white and 10.54:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #42D166 as a CSS color keyword?

No. #42D166 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 lightgreen (#90EE90) at a CIE76 distance of 18.55, which is visibly different.

Open #42D166 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.