#047B21

sRGB: 4 / 123 / 33

#047B21 belongs to the green family. Its hex code tells a screen to mix 4 red, 123 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 134.6° lands in the green region. Its 93.7% saturation makes it strong in color at this lightness. HSL lightness is 24.9% on a scale from black (0%) to white (100%). Of black and white lettering, white has the clearer light-to-dark separation on this background (5.44:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 4, 123, 33
HSL: 134.62°, 93.70%, 24.90%
HSV / HSB: 134.62°, 96.75%, 48.24%
CMYK (approx.): 96.75%, 0.00%, 73.17%, 51.76%
CIE XYZ (D65, Y = 100 for white): 7.407, 14.301, 3.809
CIELAB (D65, 2° observer): 44.661, -47.900, 39.184
WCAG relative luminance: 0.14302
24-bit decimal: 293665

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 #047B21 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: 3.86:1

Normal text: Fail
Large text: AA

White text: 5.44:1

Normal text: AA
Large text: AAA

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

#7B045E sits half a turn (180°) from #047B21 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.

#047B21 #7B045E

Analogous

#227B04 and #047B5D sit 30° to either side of #047B21. 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.

#227B04 #047B21 #047B5D

Triadic

#047B21, #21047B and #7B2104 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#047B21 #21047B #7B2104

Split complementary

Start at #047B21 and look across the wheel. #5D047B and #7B0423 sit 30° to either side of its exact opposite, giving you two different accent choices.

#047B21 #5D047B #7B0423

Square

Starting with #047B21, each quarter turn (90°) takes you to the next hue: #04227B, #7B045E, then #7B5D04. Across the square, #047B21 pairs with #7B045E, and #04227B with #7B5D04.

#047B21 #04227B #7B045E #7B5D04

Tetradic

#047B21 and #7B045E are opposites, as are #045E7B and #7B2104. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#047B21 #045E7B #7B045E #7B2104

Tints

Mixing #047B21 with white in 20% steps produces this scale. The first mixture, #36954D, keeps 80% of the original. By #CDE5D3, the mixture is 80% white.

#047B21 #36954D #68B07A #9BCAA6 #CDE5D3 #FFFFFF

Shades

Mixing #047B21 with black in 20% steps produces this scale. The first mixture, #03621A, keeps 80% of the original. By #011907, the mixture is 80% black.

#047B21 #03621A #024A14 #02310D #011907 #000000

Tones

Mixing #047B21 with middle gray in 20% steps produces this scale. The first mixture, #1D7C34, keeps 80% of the original. By #677F6D, the mixture is 80% middle gray.

#047B21 #1D7C34 #367D47 #4E7E5A #677F6D #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

#047B21

RGB

rgb(4 123 33)

HSL

hsl(134.622 93.701% 24.902%)

CSS example

.color-sample {
  background-color: #047B21;
  color: #FFFFFF;
}

Channel breakdown

RGB

#047B21 uses 4 red, 123 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 1.6%

Green 48.2%

Blue 12.9%

CMYK

A simple CMYK estimate for #047B21 is 96.7% cyan, 0.0% magenta, 73.2% yellow and 51.8% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 96.7%

Magenta 0.0%

Yellow 73.2%

Black 51.8%

Nearby colors

The nearest shorthand match is #007722. Its matching digit pairs let you write it as #072 in CSS. For a modern design, keep #047B21 when you want an exact match. Use its web-safe neighbor, #006633, when matching a legacy palette of 216 colors.

Nearest shorthand: #007722 Nearest web-safe: #006633

Gradient to complement

#047B21 #18672B #2C5335 #404040 #532C4A #671854 #7B045E

Color vision previews

Compare how #047B21 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.

#7D6E13

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.

#72672A

Tritanopia

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

#007869

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.

#66721D

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.

#616E27

Tritanomaly (50%)

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

#127946

Grayscale (luminance)

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

#6A6A6A

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.

#4C734F

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 0.00121 G 0.19807 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 0.20956 G 0.47489 B 0.18355

Linear Display P3

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

R 0.03616 G 0.19153 B 0.02821

CIE xyY

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

x 0.290 y 0.560 Y 14.301

CMY

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

C % 98.431 M % 51.765 Y % 87.059

Binary RGB

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

00000100 01111011 00100001