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#63DD4B Color

#63DD4B is rgb(99, 221, 75) in RGB, hsl(110, 68%, 58%) in HSL, and about cmyk(55%, 0%, 66%, 13%) in CMYK. It has no registered color name of its own — the closest is SGBUS Green (#55DD33), clearly related but distinguishable side by side at ΔE 8.83. Black text is the more readable choice on this background.

#63DD4B
HEX#63DD4B
RGBrgb(99, 221, 75)
HSLhsl(110, 68%, 58%)
HSVhsv(110, 66%, 87%)
CMYKcmyk(55%, 0%, 66%, 13%)
OKLCHoklch(79.9% 0.214 140.6)
LABlab(79.06% -55.50 58.09)
LCHlch(79.06% 80.34 133.69)

What #63DD4B 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 #63DD4B, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

SGBUS Green#55DD33ΔE 8.83Lime Green#32CD32ΔE 9.23Vivid Malachite#00CC33ΔE 12.32Malachite#0BDA51ΔE 12.75Kelly Green#4CBB17ΔE 12.82Screamin' Green#66FF66ΔE 13.5

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

#63DD4B Channel Values

How #63DD4B 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 99 · G 221 · B 758-bit channels as sent to the display
HSLH 110° · S 68% · L 58%Easiest model for building lighter and darker variants
HSVH 110° · S 66% · V 87%Matches the picker in most design tools
CMYKC 55% · M 0% · Y 66% · K 13%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.75:1 vs white · 11.97:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #63DD4B 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 text1.75:1AA normal AA large AAA normal
TextBlack text11.97:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #63DD4B in the contrast checker.

Colors That Go With #63DD4B

Pairings derived from color-wheel relationships. The complementary color sits opposite #63DD4B; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#63DD4B
Complementary
#C44BDD
Analogous
#ACDD4B
Analogous
#4BDD7C
Triadic
#4B63DD
Triadic
#DD4B63
Split comp.
#7C4BDD
Split comp.
#DD4BAC

Tints & Shades of #63DD4B

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

#7AE265
#8CE67A
#A2EB94
#B9EFAE
#CFF4C7
#E1F8DD

Shades

#46D629
#3CB823
#31961D
#267416
#1A5110
#11330A

Want a full 50-950 ramp with semantic roles? Generate design tokens from #63DD4B.

How #63DD4B 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#63DD4B
Protanopia#CFCF4C
Protanomaly#AED44C
Deuteranopia#C0C053
Deuteranomaly#A3CC50
Tritanopia#7ED1D1
Tritanomaly#74D6AC
Achromatopsia#C3C3C3

Test a full palette in the color blindness simulator.

Using #63DD4B in Code

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

CSS custom property--color-63dd4b: #63DD4B;
CSS backgroundbackground-color: #63DD4B;
Tailwind configcolors: { 'color-63dd4b': '#63DD4B' }
SwiftUIColor(red: 0.388, green: 0.867, blue: 0.294)
Android XML<color name="color_63dd4b">#63DD4B</color>
SVG fillfill="#63DD4B"

More Green Colors

#63DD4B sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#63DD4B Frequently Asked Questions

What color is #63DD4B?

#63DD4B is a mid-tone green — rgb(99, 221, 75) in RGB and hsl(110, 68%, 58%) in HSL. It carries no registered color name of its own; the closest named color is SGBUS Green (#55DD33), which is clearly related but distinguishable side by side at a CIE76 distance of 8.83.

What is the RGB value of #63DD4B?

#63DD4B is rgb(99, 221, 75) — red 99, green 221, and blue 75 on the 0-255 scale.

What is the CMYK value of #63DD4B?

#63DD4B converts to approximately cmyk(55%, 0%, 66%, 13%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #63DD4B be black or white?

Black text is the more readable choice. #63DD4B scores 1.75:1 against white and 11.97:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #63DD4B as a CSS color keyword?

No. #63DD4B 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 9.23, which is clearly related but distinguishable side by side.

Open #63DD4B 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.