#38FA21

sRGB: 56 / 250 / 33

#38FA21 belongs to the green family. Its hex code tells a screen to mix 56 red, 250 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 113.6° lands in the green region. Its 95.6% saturation makes it strong in color at this lightness. HSL lightness is 55.5% 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 (14.86:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 56, 250, 33
HSL: 113.64°, 95.59%, 55.49%
HSV / HSB: 113.64°, 86.80%, 98.04%
CMYK (approx.): 77.60%, 0.00%, 86.80%, 1.96%
CIE XYZ (D65, Y = 100 for white): 36.089, 69.319, 12.917
CIELAB (D65, 2° observer): 86.662, -80.443, 78.738
WCAG relative luminance: 0.69322
24-bit decimal: 3734049

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 #38FA21 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: 14.86:1

Normal text: AAA
Large text: AAA

White text: 1.41:1

Normal text: Fail
Large text: Fail

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

#E321FA sits half a turn (180°) from #38FA21 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.

#38FA21 #E321FA

Analogous

#A4FA21 and #21FA77 sit 30° to either side of #38FA21. 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.

#A4FA21 #38FA21 #21FA77

Triadic

#38FA21, #2138FA and #FA2138 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#38FA21 #2138FA #FA2138

Split complementary

Start at #38FA21 and look across the wheel. #7721FA and #FA21A4 sit 30° to either side of its exact opposite, giving you two different accent choices.

#38FA21 #7721FA #FA21A4

Square

Starting with #38FA21, each quarter turn (90°) takes you to the next hue: #21A4FA, #E321FA, then #FA7721. Across the square, #38FA21 pairs with #E321FA, and #21A4FA with #FA7721.

#38FA21 #21A4FA #E321FA #FA7721

Tetradic

#38FA21 and #E321FA are opposites, as are #21FAE3 and #FA2138. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#38FA21 #21FAE3 #E321FA #FA2138

Tints

Mixing #38FA21 with white in 20% steps produces this scale. The first mixture, #60FB4D, keeps 80% of the original. By #D7FED3, the mixture is 80% white.

#38FA21 #60FB4D #88FC7A #AFFDA6 #D7FED3 #FFFFFF

Shades

Mixing #38FA21 with black in 20% steps produces this scale. The first mixture, #2DC81A, keeps 80% of the original. By #0B3207, the mixture is 80% black.

#38FA21 #2DC81A #229614 #16640D #0B3207 #000000

Tones

Mixing #38FA21 with middle gray in 20% steps produces this scale. The first mixture, #46E234, keeps 80% of the original. By #72986D, the mixture is 80% middle gray.

#38FA21 #46E234 #55C947 #63B15A #72986D #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

#38FA21

RGB

rgb(56 250 33)

HSL

hsl(113.641 95.595% 55.490%)

CSS example

.color-sample {
  background-color: #38FA21;
  color: #000000;
}

Channel breakdown

RGB

#38FA21 uses 56 red, 250 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 22.0%

Green 98.0%

Blue 12.9%

CMYK

A simple CMYK estimate for #38FA21 is 77.6% cyan, 0.0% magenta, 86.8% yellow and 2.0% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 77.6%

Magenta 0.0%

Yellow 86.8%

Black 2.0%

Nearby colors

The nearest shorthand match is #33FF22. Its matching digit pairs let you write it as #3F2 in CSS. For a modern design, keep #38FA21 when you want an exact match. Use its web-safe neighbor, #33FF33, when matching a legacy palette of 216 colors.

Nearest shorthand: #33FF22 Nearest web-safe: #33FF33

Gradient to complement

#38FA21 #55D645 #71B269 #8E8E8E #AA69B2 #C745D6 #E321FA

Color vision previews

Compare how #38FA21 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.

#FFE200

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.

#EBD343

Tritanopia

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

#00F2D5

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.

#D5E900

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.

#CBE139

Tritanomaly (50%)

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

#48F589

Grayscale (luminance)

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

#D9D9D9

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.

#A3EAA1

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 0.03955 G 0.95597 B 0.01521

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 0.48705 G 0.96653 B 0.32037

Linear Display P3

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

R 0.20225 G 0.92555 B 0.08373

CIE xyY

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

x 0.305 y 0.586 Y 69.319

CMY

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

C % 78.039 M % 1.961 Y % 87.059

Binary RGB

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

00111000 11111010 00100001