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#40C99E Color

#40C99E is rgb(64, 201, 158) in RGB, hsl(161, 56%, 52%) in HSL, and about cmyk(68%, 0%, 21%, 21%) in CMYK. It has no registered color name of its own — the closest is Mountain Meadow (#30BA8F), clearly related but distinguishable side by side at ΔE 5.34. Black text is the more readable choice on this background.

#40C99E
HEX#40C99E
RGBrgb(64, 201, 158)
HSLhsl(161, 56%, 52%)
HSVhsv(161, 68%, 79%)
CMYKcmyk(68%, 0%, 21%, 21%)
OKLCHoklch(75.2% 0.133 167.9)
LABlab(72.95% -46.02 10.36)
LCHlch(72.95% 47.17 167.31)

What #40C99E 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 #40C99E, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Mountain Meadow#30BA8FΔE 5.34Eucalyptus#44D7A8ΔE 5.44Caribbean Green#00CC99ΔE 7.85Medium Aquamarine#66CDAAΔE 9.03Jungle Green#29AB87ΔE 11.12Spearmint#4FE7B0ΔE 11.96

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

#40C99E Channel Values

How #40C99E 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 64 · G 201 · B 1588-bit channels as sent to the display
HSLH 161° · S 56% · L 52%Easiest model for building lighter and darker variants
HSVH 161° · S 68% · V 79%Matches the picker in most design tools
CMYKC 68% · M 0% · Y 21% · K 21%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.09:1 vs white · 10.07:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #40C99E 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 text2.09:1AA normal AA large AAA normal
TextBlack text10.07:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #40C99E in the contrast checker.

Colors That Go With #40C99E

Pairings derived from color-wheel relationships. The complementary color sits opposite #40C99E; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#40C99E
Complementary
#C9406B
Analogous
#40C959
Analogous
#40B0C9
Triadic
#9E40C9
Triadic
#C99E40
Split comp.
#C940B0
Split comp.
#C95940

Tints & Shades of #40C99E

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

#5CD1AC
#74D8B8
#90E0C6
#A7E6D2
#C3EEE1
#DBF5ED

Shades

#32B38A
#2B9775
#237B5F
#1C634D
#144837
#0C2C22

Want a full 50-950 ramp with semantic roles? Generate design tokens from #40C99E.

How #40C99E 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#40C99E
Protanopia#BABA9F
Protanomaly#99C09E
Deuteranopia#ABABA1
Deuteranomaly#8DB8A0
Tritanopia#51C4C4
Tritanomaly#4BC6B6
Achromatopsia#B3B3B3

Test a full palette in the color blindness simulator.

Using #40C99E in Code

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

CSS custom property--color-40c99e: #40C99E;
CSS backgroundbackground-color: #40C99E;
Tailwind configcolors: { 'color-40c99e': '#40C99E' }
SwiftUIColor(red: 0.251, green: 0.788, blue: 0.620)
Android XML<color name="color_40c99e">#40C99E</color>
SVG fillfill="#40C99E"

More Green Colors

#40C99E sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#40C99E Frequently Asked Questions

What color is #40C99E?

#40C99E is a mid-tone green — rgb(64, 201, 158) in RGB and hsl(161, 56%, 52%) in HSL. It carries no registered color name of its own; the closest named color is Mountain Meadow (#30BA8F), which is clearly related but distinguishable side by side at a CIE76 distance of 5.34.

What is the RGB value of #40C99E?

#40C99E is rgb(64, 201, 158) — red 64, green 201, and blue 158 on the 0-255 scale.

What is the CMYK value of #40C99E?

#40C99E converts to approximately cmyk(68%, 0%, 21%, 21%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #40C99E be black or white?

Black text is the more readable choice. #40C99E scores 2.09:1 against white and 10.07:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #40C99E as a CSS color keyword?

No. #40C99E 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 9.03, which is clearly related but distinguishable side by side.

Open #40C99E 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.