#BBFF91

sRGB: 187 / 255 / 145

Ancient mountains rise against oblivion
Unbridled forces transform the fabric of existence
Rising tides surrender to silence

#BBFF91 belongs to the yellow-green family. Its hex code tells a screen to mix 187 red, 255 green and 145 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 97.1° lands in the yellow-green region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 78.4% 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 (17.83:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 187, 255, 145
HSL: 97.09°, 100.00%, 78.43%
HSV / HSB: 97.09°, 43.14%, 100.00%
CMYK (approx.): 26.67%, 0.00%, 43.14%, 0.00%
CIE XYZ (D65, Y = 100 for white): 61.362, 84.128, 39.794
CIELAB (D65, 2° observer): 93.506, -39.868, 45.820
WCAG relative luminance: 0.84129
24-bit decimal: 12320657

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 #BBFF91 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: 17.83:1

Normal text: AAA
Large text: AAA

White text: 1.18:1

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

#D591FF sits half a turn (180°) from #BBFF91 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.

#BBFF91 #D591FF

Analogous

#F2FF91 and #91FF9E sit 30° to either side of #BBFF91. 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.

#F2FF91 #BBFF91 #91FF9E

Triadic

#BBFF91, #91BBFF and #FF91BB are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#BBFF91 #91BBFF #FF91BB

Split complementary

Start at #BBFF91 and look across the wheel. #9E91FF and #FF91F2 sit 30° to either side of its exact opposite, giving you two different accent choices.

#BBFF91 #9E91FF #FF91F2

Square

Starting with #BBFF91, each quarter turn (90°) takes you to the next hue: #91F2FF, #D591FF, then #FF9E91. Across the square, #BBFF91 pairs with #D591FF, and #91F2FF with #FF9E91.

#BBFF91 #91F2FF #D591FF #FF9E91

Tetradic

#BBFF91 and #D591FF are opposites, as are #91FFD5 and #FF91BB. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#BBFF91 #91FFD5 #D591FF #FF91BB

Tints

Mixing #BBFF91 with white in 20% steps produces this scale. The first mixture, #C9FFA7, keeps 80% of the original. By #F1FFE9, the mixture is 80% white.

#BBFF91 #C9FFA7 #D6FFBD #E4FFD3 #F1FFE9 #FFFFFF

Shades

Mixing #BBFF91 with black in 20% steps produces this scale. The first mixture, #96CC74, keeps 80% of the original. By #25331D, the mixture is 80% black.

#BBFF91 #96CC74 #709957 #4B663A #25331D #000000

Tones

Mixing #BBFF91 with middle gray in 20% steps produces this scale. The first mixture, #AFE68E, keeps 80% of the original. By #8C9983, the mixture is 80% middle gray.

#BBFF91 #AFE68E #A3CC8A #98B387 #8C9983 #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

#BBFF91

RGB

rgb(187 255 145)

HSL

hsl(97.091 100.000% 78.431%)

CSS example

.color-sample {
  background-color: #BBFF91;
  color: #000000;
}

Channel breakdown

RGB

#BBFF91 uses 187 red, 255 green and 145 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 73.3%

Green 100.0%

Blue 56.9%

CMYK

A simple CMYK estimate for #BBFF91 is 26.7% cyan, 0.0% magenta, 43.1% yellow and 0.0% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 26.7%

Magenta 0.0%

Yellow 43.1%

Black 0.0%

Nearby colors

The nearest shorthand match is #BBFF99. Its matching digit pairs let you write it as #BF9 in CSS. For a modern design, keep #BBFF91 when you want an exact match. Use its web-safe neighbor, #CCFF99, when matching a legacy palette of 216 colors.

Nearest shorthand: #BBFF99 Nearest web-safe: #CCFF99

Gradient to complement

#BBFF91 #BFEDA3 #C4DAB6 #C8C8C8 #CCB6DA #D1A3ED #D591FF

Color vision previews

Compare how #BBFF91 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.

#FFF088

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.

#FDEA97

Tritanopia

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

#BBF7E5

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.

#F0F58E

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.

#ECF195

Tritanomaly (50%)

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

#BFFBB5

Grayscale (luminance)

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

#ECECEC

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.

#D6F6C6

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 0.49693 G 1.00000 B 0.28315

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 0.78954 G 0.99262 B 0.61696

Linear Display P3

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

R 0.58625 G 0.98330 B 0.33870

CIE xyY

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

x 0.331 y 0.454 Y 84.128

CMY

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

C % 26.667 M % 0.000 Y % 43.137

Binary RGB

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

10111011 11111111 10010001