#3FA607

sRGB: 63 / 166 / 7

#3FA607 belongs to the yellow-green family. Its hex code tells a screen to mix 63 red, 166 green and 7 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 98.9° lands in the yellow-green region. Its 91.9% saturation makes it strong in color at this lightness. HSL lightness is 33.9% on a scale from black (0%) to white (100%). Of black and white lettering, black has the clearer light-to-dark separation on this background (6.67:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 63, 166, 7
HSL: 98.87°, 91.91%, 33.92%
HSV / HSB: 98.87°, 95.78%, 65.10%
CMYK (approx.): 62.05%, 0.00%, 95.78%, 34.90%
CIE XYZ (D65, Y = 100 for white): 15.724, 28.344, 4.843
CIELAB (D65, 2° observer): 60.198, -53.958, 60.517
WCAG relative luminance: 0.28345
24-bit decimal: 4171271

CMYK uses a profile-free approximation. Printed output depends on the press, ink and paper. Lab uses a D65 white point.

Text contrast

Contrast tells you how clearly lettering separates from #3FA607 in light and dark. The ratio compares relative luminance, a measure of light weighted for human vision. Identical colors give 1:1 and black against white gives 21:1. A ratio of 2.99:1 falls just below the 3:1 AA minimum for large text. Body text needs at least 4.5:1 because its finer strokes are harder to distinguish.

Black text: 6.67:1

Normal text: AA
Large text: AAA

White text: 3.15:1

Normal text: Fail
Large text: AA

AA and AAA are WCAG accessibility levels. AAA sets a higher bar: 7:1 for normal text and 4.5:1 for large text. Large text begins at 18 pt regular or 14 pt bold. Ratings use the unrounded ratio.

Reference: WCAG text contrast guidance

Palettes & scales

Harmonies rotate the hue. Scales mix the starting color with white, black or middle gray in 20% steps in encoded sRGB.

Complementary

#6E07A6 sits half a turn (180°) from #3FA607 on the HSL wheel. Keeping saturation and lightness steady while crossing to the opposite hue gives you a contrasting accent. Check text contrast separately before using the pair for lettering.

#3FA607 #6E07A6

Analogous

#8EA607 and #07A61F sit 30° to either side of #3FA607. The three hues are neighbors on the wheel, so you can change the color of a border or highlight while keeping it close to the original.

#8EA607 #3FA607 #07A61F

Triadic

#3FA607, #073FA6 and #A6073F are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#3FA607 #073FA6 #A6073F

Split complementary

Start at #3FA607 and look across the wheel. #1F07A6 and #A6078E sit 30° to either side of its exact opposite, giving you two different accent choices.

#3FA607 #1F07A6 #A6078E

Square

Starting with #3FA607, each quarter turn (90°) takes you to the next hue: #078EA6, #6E07A6, then #A61F07. Across the square, #3FA607 pairs with #6E07A6, and #078EA6 with #A61F07.

#3FA607 #078EA6 #6E07A6 #A61F07

Tetradic

#3FA607 and #6E07A6 are opposites, as are #07A66E and #A6073F. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#3FA607 #07A66E #6E07A6 #A6073F

Tints

Mixing #3FA607 with white in 20% steps produces this scale. The first mixture, #65B839, keeps 80% of the original. By #D9EDCD, the mixture is 80% white.

#3FA607 #65B839 #8CCA6A #B2DB9C #D9EDCD #FFFFFF

Shades

Mixing #3FA607 with black in 20% steps produces this scale. The first mixture, #328506, keeps 80% of the original. By #0D2101, the mixture is 80% black.

#3FA607 #328506 #266404 #194203 #0D2101 #000000

Tones

Mixing #3FA607 with middle gray in 20% steps produces this scale. The first mixture, #4C9E1F, keeps 80% of the original. By #738868, the mixture is 80% middle gray.

#3FA607 #4C9E1F #599737 #668F50 #738868 #808080

Copy color codes

Hex, RGB and HSL are three ways to write this screen color. Paste any of them into a CSS color property.

Hex

#3FA607

RGB

rgb(63 166 7)

HSL

hsl(98.868 91.908% 33.922%)

CSS example

.color-sample {
  background-color: #3FA607;
  color: #000000;
}

Channel breakdown

RGB

#3FA607 uses 63 red, 166 green and 7 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 24.7%

Green 65.1%

Blue 2.7%

CMYK

A simple CMYK estimate for #3FA607 is 62.0% cyan, 0.0% magenta, 95.8% yellow and 34.9% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 62.0%

Magenta 0.0%

Yellow 95.8%

Black 34.9%

Nearby colors

The nearest shorthand match is #44AA00. Its matching digit pairs let you write it as #4A0 in CSS. For a modern design, keep #3FA607 when you want an exact match. Use its web-safe neighbor, #339900, when matching a legacy palette of 216 colors.

Nearest shorthand: #44AA00 Nearest web-safe: #339900

Gradient to complement

#3FA607 #478C22 #4F713C #575757 #5E3C71 #66228C #6E07A6

Color vision previews

Compare how #3FA607 appears in each simulation. When two chart lines or status indicators become hard to tell apart, a label, shape or line pattern gives readers another way to distinguish them. Individual perception varies.

Protanopia

A red–green color vision deficiency. Without a distinct response from long-wavelength cones, some reds and greens can look alike, and reds can appear darker.

#AB9600

Deuteranopia

A red–green color vision deficiency. Without a distinct response from medium-wavelength cones, some greens can be difficult to distinguish from reds or browns.

#9F8E24

Tritanopia

A blue–yellow color vision deficiency. Without a distinct response from short-wavelength cones, blue can resemble green, and yellow can resemble pink.

#33A08D

Protanomaly (50%)

An altered long-wavelength cone response can make reds appear dimmer and harder to distinguish from greens. This swatch shows the model’s halfway setting.

#919B00

Deuteranomaly (50%)

An altered medium-wavelength cone response can reduce the visible difference between reds and greens. This swatch shows the model’s halfway setting.

#8B961D

Tritanomaly (50%)

An altered short-wavelength cone response can make blue harder to distinguish from green. This swatch shows the model’s halfway setting.

#46A358

Grayscale (luminance)

This design check removes hue and preserves relative luminance so you can compare light and dark areas.

#919191

Partial grayscale (50% blend)

This design check mixes the original color halfway toward its grayscale equivalent in linear light. Use it to see how a design holds up as color fades.

#719C6A

Reference: National Eye Institute: Types of Color Vision Deficiency

Technical reference

CAM16 and CIECAM02 below assume D65 white, an average surround, background Y of 20 against white at 100, and adapting luminance of 4.07 cd/m².

Linear sRGB

These channels scale with emitted light. Use them for lighting calculations and physically meaningful blends.

R 0.04971 G 0.38133 B 0.00212

Display P3

P3 displays can reproduce a wider range of reds and greens. These coordinates reproduce this same sRGB swatch on a color-managed P3 display.

R 0.36330 G 0.64242 B 0.19107

Linear Display P3

These P3 channels are proportional to light, before display encoding.

R 0.10858 G 0.37032 B 0.03039

CIE xyY

The x and y coordinates locate chromaticity on a diagram. Y gives relative luminance on a scale where white is 100.

x 0.321 y 0.579 Y 28.344

CMY

Ideal cyan, magenta and yellow are the complements of the encoded red, green and blue channels.

C % 75.294 M % 34.902 Y % 97.255

Binary RGB

Each eight-bit group represents one channel. Together they store the 24-bit hex color.

00111111 10100110 00000111