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Image credit: Dave Gough www.flic.kr/p/oDGsY Responsive Color Clarissa Peterson ✦ @clarissa ✦ June 2015

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Credit: flic.kr/p/7E3TZ6

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Credit: Steve Snodgrass flic.kr/p/8twyMD

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Credit: flic.kr/p/fczzhQ

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http://commons.wikimedia.org/wiki/File:IBM_PC_5150.jpg

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Credit: flic.kr/p/6AELnT

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Credit: flic.kr/p/4Mioyn

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Hue - Value - Saturation

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Hue

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Credit: MaxPower commons.wikimedia.org/wiki/File:HLSColorSpace.png

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Value

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Credit: Zoetnet flic.kr/p/8oKkbJ

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Credit: Zoetnet flic.kr/p/8oKkbJ

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Saturation

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Credit: Pawsitive Candie N flic.kr/p/7Rb4Yp

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Color Notation in CSS

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Credit: Pengo commons.wikimedia.org/wiki/File:Pixel_geometry_01_Pengo.jpg

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256 256 256

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RGB Notation

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0-255 0-255 0-255

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color: rgb(200,0,100);

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color: rgb(75%,0%,50%);

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00-FF 00-FF 00-FF

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color: #A9C862;

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HSL Notation

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color: hsl(120, 100%, 50%);

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color: hsl(120, 100%, 50%);

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color: hsl(120, 100%, 50%);

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color: hsl(120, 100%, 50%);

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color: hsl(120, 50%, 50%);

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color: hsl(120, 50%, 20%);

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color: hsl(120, 50%, 80%);

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Opacity

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RGBa Notation

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color: rgba(150,0,25,1); color: rgba(0%,50%,40%,0.5);

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div { opacity: 0.2; }

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HSLa Notation

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color: hsla(120, 100%, 50%, .5);

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Color Blindness

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Normal Deuteranope Protanope Tritanope

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Credit: thecrazyfilmgirl https://flic.kr/p/5X3ixX

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Perception of Color

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Credit: HomeSpot HQ https://flic.kr/p/ePQ8wy

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Credit: Scott Feldstein https://flic.kr/p/6kaePP

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Credit: JD Hancock https://flic.kr/p/7Hg1aa

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What You Think You See

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Screens

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Credit: Rusty Clark flic.kr/p/dyy44R

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Credit: flic.kr/p/gnmwty

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Light

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Credit: Quinn Dombrowski flic.kr/p/cqpNFU

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Credit: Caroline flic.kr/p/bq1X3o

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Credit: ClearFrost flic.kr/p/o9mSXd

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@media (light-level: dim) { /* change the colors */ }

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Credit: Jeremy Keith flic.kr/p/o9thWy

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Responsive Color

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Credit: Clive Darra https://flic.kr/p/5HjxAN

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@media print { /* print styles here */ }

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SASS

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Color Variables

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p { color: #278232; } $green: #278232; p { color: $green; }

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$green $green-light $green-dark

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$primary-background-color $button-border

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Lighten & Darken

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lighten($purple, 20%)

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.box1 { background-color: #b650d9; } .box2 { background-color: #d9a4eb; } $purple: #b650d9; .box1 { background-color: $purple; } .box2 { background-color: lighten($purple, 20%); }

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darken($purple, 40%)

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$button: #b650d9; .button { background-color: $button; border:3px solid darken($button, 20%); box-shadow: 7px 6px 3px -2px lighten($button, 20%); }

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Saturate & Desaturate

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saturate($blue, 70%)

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Grayscale

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Inverse

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sassme.arc90.com/

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sassme.arc90.com/

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sassme.arc90.com/

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Blend

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.blending { background-image: url(goat.png); background-color: purple; background-blend-mode: multiply; }

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.blending { background-image: url(goat.png); background-color: purple; background-blend-mode: multiply; }

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.blending { background-image: url(goat.png); background-color: purple; background-blend-mode: multiply; }

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multiply

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screen

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overlay

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darken

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lighten

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color-dodge

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color-burn

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hard-light

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soft-light

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difference

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exclusion

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hue

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saturation

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color

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luminosity

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luminosity

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Credit: Tuncay flic.kr/p/njc9ph Clarissa Peterson clarissapeterson.com @clarissa