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#42C2AA Color

#42C2AA is rgb(66, 194, 170) in RGB, hsl(169, 51%, 51%) in HSL, and about cmyk(66%, 0%, 12%, 24%) in CMYK. It has no registered color name of its own — the closest is Keppel (#3AB09E), clearly related but distinguishable side by side at ΔE 7.27. Black text is the more readable choice on this background.

#42C2AA
HEX#42C2AA
RGBrgb(66, 194, 170)
HSLhsl(169, 51%, 51%)
HSVhsv(169, 66%, 76%)
CMYKcmyk(66%, 0%, 12%, 24%)
OKLCHoklch(73.8% 0.117 177.9)
LABlab(71.09% -40.78 1.31)
LCHlch(71.09% 40.80 178.17)

What #42C2AA 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 #42C2AA, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Keppel#3AB09EΔE 7.27Medium Aquamarine#66CDAAΔE 8.46Light Sea Green#20B2AAΔE 10.14Zomp#39A78EΔE 10.16Persian Green#00A693ΔE 10.47Tiffany Blue#0ABAB5ΔE 10.92

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

#42C2AA Channel Values

How #42C2AA 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 1708-bit channels as sent to the display
HSLH 169° · S 51% · L 51%Easiest model for building lighter and darker variants
HSVH 169° · S 66% · V 76%Matches the picker in most design tools
CMYKC 66% · M 0% · Y 12% · K 24%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.2:1 vs white · 9.53:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #42C2AA 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 text2.2:1AA normal AA large AAA normal
TextBlack text9.53:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #42C2AA in the contrast checker.

Colors That Go With #42C2AA

Pairings derived from color-wheel relationships. The complementary color sits opposite #42C2AA; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#42C2AA
Complementary
#C2425A
Analogous
#42C26B
Analogous
#4299C2
Triadic
#AA42C2
Triadic
#C2AA42
Split comp.
#C24299
Split comp.
#C26B42

Tints & Shades of #42C2AA

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

#5DCBB6
#74D2C1
#8FDBCD
#AAE4D9
#C5ECE5
#DCF4EF

Shades

#37A994
#2F9280
#277769
#1E5C51
#154139
#0E2A25

Want a full 50-950 ramp with semantic roles? Generate design tokens from #42C2AA.

How #42C2AA 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#42C2AA
Protanopia#B4B4AA
Protanomaly#94BAAA
Deuteranopia#A6A6AD
Deuteranomaly#89B2AC
Tritanopia#4CBFBF
Tritanomaly#48C0B7
Achromatopsia#AFAFAF

Test a full palette in the color blindness simulator.

Using #42C2AA in Code

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

CSS custom property--color-42c2aa: #42C2AA;
CSS backgroundbackground-color: #42C2AA;
Tailwind configcolors: { 'color-42c2aa': '#42C2AA' }
SwiftUIColor(red: 0.259, green: 0.761, blue: 0.667)
Android XML<color name="color_42c2aa">#42C2AA</color>
SVG fillfill="#42C2AA"

More Green Colors

#42C2AA sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#42C2AA Frequently Asked Questions

What color is #42C2AA?

#42C2AA is a mid-tone green — rgb(66, 194, 170) in RGB and hsl(169, 51%, 51%) in HSL. It carries no registered color name of its own; the closest named color is Keppel (#3AB09E), which is clearly related but distinguishable side by side at a CIE76 distance of 7.27.

What is the RGB value of #42C2AA?

#42C2AA is rgb(66, 194, 170) — red 66, green 194, and blue 170 on the 0-255 scale.

What is the CMYK value of #42C2AA?

#42C2AA converts to approximately cmyk(66%, 0%, 12%, 24%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #42C2AA be black or white?

Black text is the more readable choice. #42C2AA scores 2.2:1 against white and 9.53:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #42C2AA as a CSS color keyword?

No. #42C2AA 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 mediumaquamarine (#66CDAA) at a CIE76 distance of 8.46, which is clearly related but distinguishable side by side.

Open #42C2AA 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.