#99BC13

sRGB: 153 / 188 / 19

#99BC13 belongs to the yellow family. Its hex code tells a screen to mix 153 red, 188 green and 19 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 72.4° lands in the yellow region. Its 81.6% saturation makes it strong in color at this lightness. HSL lightness is 40.6% 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 (9.56:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 153, 188, 19
HSL: 72.43°, 81.64%, 40.59%
HSV / HSB: 72.43°, 89.89%, 73.73%
CMYK (approx.): 18.62%, 0.00%, 89.89%, 26.27%
CIE XYZ (D65, Y = 100 for white): 31.237, 42.785, 7.229
CIELAB (D65, 2° observer): 71.409, -31.715, 69.727
WCAG relative luminance: 0.42786
24-bit decimal: 10075155

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 #99BC13 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: 9.56:1

Normal text: AAA
Large text: AAA

White text: 2.20:1

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

#3613BC sits half a turn (180°) from #99BC13 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.

#99BC13 #3613BC

Analogous

#BC8B13 and #44BC13 sit 30° to either side of #99BC13. 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.

#BC8B13 #99BC13 #44BC13

Triadic

#99BC13, #1399BC and #BC1399 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#99BC13 #1399BC #BC1399

Split complementary

Start at #99BC13 and look across the wheel. #1344BC and #8B13BC sit 30° to either side of its exact opposite, giving you two different accent choices.

#99BC13 #1344BC #8B13BC

Square

Starting with #99BC13, each quarter turn (90°) takes you to the next hue: #13BC8B, #3613BC, then #BC1345. Across the square, #99BC13 pairs with #3613BC, and #13BC8B with #BC1345.

#99BC13 #13BC8B #3613BC #BC1345

Tetradic

#99BC13 and #3613BC are opposites, as are #13BC36 and #BC1399. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#99BC13 #13BC36 #3613BC #BC1399

Tints

Mixing #99BC13 with white in 20% steps produces this scale. The first mixture, #ADC942, keeps 80% of the original. By #EBF2D0, the mixture is 80% white.

#99BC13 #ADC942 #C2D771 #D6E4A1 #EBF2D0 #FFFFFF

Shades

Mixing #99BC13 with black in 20% steps produces this scale. The first mixture, #7A960F, keeps 80% of the original. By #1F2604, the mixture is 80% black.

#99BC13 #7A960F #5C710B #3D4B08 #1F2604 #000000

Tones

Mixing #99BC13 with middle gray in 20% steps produces this scale. The first mixture, #94B029, keeps 80% of the original. By #858C6A, the mixture is 80% middle gray.

#99BC13 #94B029 #8FA43F #8A9854 #858C6A #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

#99BC13

RGB

rgb(153 188 19)

HSL

hsl(72.426 81.643% 40.588%)

CSS example

.color-sample {
  background-color: #99BC13;
  color: #000000;
}

Channel breakdown

RGB

#99BC13 uses 153 red, 188 green and 19 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 60.0%

Green 73.7%

Blue 7.5%

CMYK

A simple CMYK estimate for #99BC13 is 18.6% cyan, 0.0% magenta, 89.9% yellow and 26.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 18.6%

Magenta 0.0%

Yellow 89.9%

Black 26.3%

Nearby colors

The nearest shorthand match is #99BB11. Its matching digit pairs let you write it as #9B1 in CSS. For a modern design, keep #99BC13 when you want an exact match. Use its web-safe neighbor, #99CC00, when matching a legacy palette of 216 colors.

Nearest shorthand: #99BB11 Nearest web-safe: #99CC00

Gradient to complement

#99BC13 #89A02F #78844B #686868 #574B84 #472FA0 #3613BC

Color vision previews

Compare how #99BC13 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.

#C8B000

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.

#C3AF2B

Tritanopia

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

#A2B2A0

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.

#B9B400

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.

#B8B323

Tritanomaly (50%)

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

#9DB866

Grayscale (luminance)

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

#AFAFAF

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.

#A4B680

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 0.31855 G 0.50289 B 0.00651

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 0.62724 G 0.73322 B 0.24212

Linear Display P3

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

R 0.35127 G 0.49677 B 0.04778

CIE xyY

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

x 0.384 y 0.527 Y 42.785

CMY

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

C % 40.000 M % 26.275 Y % 92.549

Binary RGB

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

10011001 10111100 00010011