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#42C21E Color

#42C21E is rgb(66, 194, 30) in RGB, hsl(107, 73%, 44%) in HSL, and about cmyk(66%, 0%, 85%, 24%) in CMYK. It has no registered color name of its own — the closest is Kelly Green (#4CBB17), very hard to tell apart at ΔE 4.68. Black text is the more readable choice on this background.

#42C21E
HEX#42C21E
RGBrgb(66, 194, 30)
HSLhsl(107, 73%, 44%)
HSVhsv(107, 85%, 76%)
CMYKcmyk(66%, 0%, 85%, 24%)
OKLCHoklch(71.5% 0.221 140.3)
LABlab(69.44% -56.70 62.74)
LCHlch(69.44% 84.56 132.10)

What #42C21E 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 #42C21E, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Kelly Green#4CBB17ΔE 4.68Lime Green#32CD32ΔE 6.66Vivid Malachite#00CC33ΔE 9.94SGBUS Green#55DD33ΔE 10.09Dark Pastel Green#03C03CΔE 12.1Malachite#0BDA51ΔE 15.99

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

#42C21E Channel Values

How #42C21E 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 194 · B 308-bit channels as sent to the display
HSLH 107° · S 73% · L 44%Easiest model for building lighter and darker variants
HSVH 107° · S 85% · V 76%Matches the picker in most design tools
CMYKC 66% · M 0% · Y 85% · K 24%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.34:1 vs white · 8.97:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #42C21E 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 text2.34:1AA normal AA large AAA normal
TextBlack text8.97:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #42C21E in the contrast checker.

Colors That Go With #42C21E

Pairings derived from color-wheel relationships. The complementary color sits opposite #42C21E; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#42C21E
Complementary
#9F1EC2
Analogous
#94C21E
Analogous
#1EC24D
Triadic
#1E42C2
Triadic
#C21E42
Split comp.
#4D1EC2
Split comp.
#C21E94

Tints & Shades of #42C21E

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

#52DE2B
#6BE34A
#88E86D
#A5EE91
#C2F3B4
#DBF8D3

Shades

#39A81A
#319217
#287713
#1F5D0E
#16420A
#0F2C07

Want a full 50-950 ramp with semantic roles? Generate design tokens from #42C21E.

How #42C21E 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#42C21E
Protanopia#B4B421
Protanomaly#94BA20
Deuteranopia#A6A62D
Deuteranomaly#89B228
Tritanopia#62B7B7
Tritanomaly#57BB92
Achromatopsia#A9A9A9

Test a full palette in the color blindness simulator.

Using #42C21E in Code

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

CSS custom property--color-42c21e: #42C21E;
CSS backgroundbackground-color: #42C21E;
Tailwind configcolors: { 'color-42c21e': '#42C21E' }
SwiftUIColor(red: 0.259, green: 0.761, blue: 0.118)
Android XML<color name="color_42c21e">#42C21E</color>
SVG fillfill="#42C21E"

More Green Colors

#42C21E sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#42C21E Frequently Asked Questions

What color is #42C21E?

#42C21E is a mid-tone green — rgb(66, 194, 30) in RGB and hsl(107, 73%, 44%) in HSL. It carries no registered color name of its own; the closest named color is Kelly Green (#4CBB17), which is very hard to tell apart at a CIE76 distance of 4.68.

What is the RGB value of #42C21E?

#42C21E is rgb(66, 194, 30) — red 66, green 194, and blue 30 on the 0-255 scale.

What is the CMYK value of #42C21E?

#42C21E converts to approximately cmyk(66%, 0%, 85%, 24%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #42C21E be black or white?

Black text is the more readable choice. #42C21E scores 2.34:1 against white and 8.97:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #42C21E as a CSS color keyword?

No. #42C21E 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 limegreen (#32CD32) at a CIE76 distance of 6.66, which is clearly related but distinguishable side by side.

Open #42C21E 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.