#EFFBFE

sRGB: 239 / 251 / 254

Infinite horizons reshape eternity
Unbridled forces shimmer across boundless heavens
Celestial symphonies transcend the limits of dreams

#EFFBFE belongs to the cyan family. Its hex code tells a screen to mix 239 red, 251 green and 254 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 192.0° lands in the cyan region. Its 88.2% saturation makes it strong in color at this lightness. HSL lightness is 96.7% 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 (19.90:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 239, 251, 254
HSL: 192.00°, 88.24%, 96.67%
HSV / HSB: 192.00°, 5.91%, 99.61%
CMYK (approx.): 5.91%, 1.18%, 0.00%, 0.39%
CIE XYZ (D65, Y = 100 for white): 87.979, 94.500, 107.375
CIELAB (D65, 2° observer): 97.833, -3.373, -2.794
WCAG relative luminance: 0.94501
24-bit decimal: 15727614

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 #EFFBFE 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: 19.90:1

Normal text: AAA
Large text: AAA

White text: 1.06:1

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

#FEF2EF sits half a turn (180°) from #EFFBFE 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.

#EFFBFE #FEF2EF

Analogous

#EFFEFA and #EFF3FE sit 30° to either side of #EFFBFE. 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.

#EFFEFA #EFFBFE #EFF3FE

Triadic

#EFFBFE, #FEEFFB and #FBFEEF are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#EFFBFE #FEEFFB #FBFEEF

Split complementary

Start at #EFFBFE and look across the wheel. #FEEFF3 and #FEFAEF sit 30° to either side of its exact opposite, giving you two different accent choices.

#EFFBFE #FEEFF3 #FEFAEF

Square

Starting with #EFFBFE, each quarter turn (90°) takes you to the next hue: #FAEFFE, #FEF2EF, then #F4FEEF. Across the square, #EFFBFE pairs with #FEF2EF, and #FAEFFE with #F4FEEF.

#EFFBFE #FAEFFE #FEF2EF #F4FEEF

Tetradic

#EFFBFE and #FEF2EF are opposites, as are #F2EFFE and #FBFEEF. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#EFFBFE #F2EFFE #FEF2EF #FBFEEF

Tints

Mixing #EFFBFE with white in 20% steps produces this scale. The first mixture, #F2FCFE, keeps 80% of the original. By #FCFEFF, the mixture is 80% white.

#EFFBFE #F2FCFE #F5FDFE #F9FDFF #FCFEFF #FFFFFF

Shades

Mixing #EFFBFE with black in 20% steps produces this scale. The first mixture, #BFC9CB, keeps 80% of the original. By #303233, the mixture is 80% black.

#EFFBFE #BFC9CB #8F9798 #606466 #303233 #000000

Tones

Mixing #EFFBFE with middle gray in 20% steps produces this scale. The first mixture, #D9E2E5, keeps 80% of the original. By #969999, the mixture is 80% middle gray.

#EFFBFE #D9E2E5 #C3CACC #ACB1B2 #969999 #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

#EFFBFE

RGB

rgb(239 251 254)

HSL

hsl(192.000 88.235% 96.667%)

CSS example

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

Channel breakdown

RGB

#EFFBFE uses 239 red, 251 green and 254 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 93.7%

Green 98.4%

Blue 99.6%

CMYK

A simple CMYK estimate for #EFFBFE is 5.9% cyan, 1.2% magenta, 0.0% yellow and 0.4% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 5.9%

Magenta 1.2%

Yellow 0.0%

Black 0.4%

Nearby colors

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

Nearest shorthand: #EEFFFF Nearest web-safe: #FFFFFF

Gradient to complement

#EFFBFE #F2FAFC #F4F8F9 #F7F7F7 #F9F5F4 #FCF4F2 #FEF2EF

Color vision previews

Compare how #EFFBFE 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.

#F9FAFE

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.

#F6F8FE

Tritanopia

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

#EBFCFC

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.

#F5FAFE

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.

#F4F9FE

Tritanomaly (50%)

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

#EFFBFD

Grayscale (luminance)

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

#F9F9F9

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.

#F4FAFB

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 0.86316 G 0.96469 B 0.99110

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 0.94584 G 0.98280 B 0.99427

Linear Display P3

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

R 0.88118 G 0.96132 B 0.98700

CIE xyY

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

x 0.304 y 0.326 Y 94.500

CMY

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

C % 6.275 M % 1.569 Y % 0.392

Binary RGB

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

11101111 11111011 11111110