All posts by Sage1175

Jason Sage_book cover



Repulsive/complimentary contrast

spontanious_Simultaneous contrast


Spontaneous/simultaneous  contrast

Nightmare_contrast of sauration

Nightmare/Contrast of saturation


metamorphasis_contrast of value


Metamorphosis/contrast of value

insidious_contrast of light and

Insidious/Contrast of light and dark


helpless&traped_cold and warm


help and trapped/Cold and warm



Good vs evil/Contrast of value



Disfigured/ Contrast of value



Discovery/light and dark

assault_complamentry contrast

Assault/ complimentary contrast



Jason Sage_color contrast and optical illusion

In is interesting how the placement of hues have such a large effect on all the surrounding hues. A couple examples are, one the human perception mixes colors that are next to each other and usually sees a color that is not really there because they see it as a composition and the mixing of the colors.  And how the perception of a hue can be effected by the positing of it on the color wheel.

In experimentation with color it is interesting to learn that in a composition of light color with just the addition of a little dark color will completely dominate. Just as a small amount of warm color can dominate a large amount of light color.



Jason Sage_color perception

We see color due to three types of light receptors located in the retina of the eye called cones and receptors that don’t pick up wavelengths called rods.  One interesting thing about this is that cones don’t work so well at night time which is when the rods kick in.  This is why it is hard for us to distinguish color in the dark.

The three cone receptors that pick up the wavelengths are known as the L-cone, M-cone and S-cone.  These are the Long red wavelengths, Medium green wavelengths and Short blue wavelengths.  The absents of any of these results in some level of color blindness.

Color blindness affect more males then females with 8% being male .5% being female.  People that lack cone receptors cannot see color.  Another way color is received differently by the human eye is in technology.  In this format we read color in two different formats RGB which is printed ink and CMYK which is lightwaves as seen in television screens.

People with impaired vision have a hard time perceiving color contrast when having the contrasting colors the same value.  One effect way to get this across is making the light color lighter and dark color darker.


Jason Sage


The human eye can see 10 million different colors.

Not all colors are seen on a monitor.  Its the mixing of colors that causes us to see them.


Isaac Newton developed the color wheel.

Johann Wolfgang von Goethe was a poet, artist and politician.

He taught us the psychology of colors.

Otto Runge wanted to show the world that all colors could be made from red yellow and blue.

showed the differences by adding white and black.



Munsell using numbers to give value to colors 10 for white/ 0 for black.

Munsell color system that was based on hue, value and croma.

Josef Albers interaction of colors.

Itten teaching elements of color using color contrast.


Different colors represent different things of fillings to different people.

Some of these are,

Yellow is caution as in a held sign

Red is urgency  designed to get a point across fast.

Blue is the most recognized and used color.  Its also symbolizes stability and loyalty.

Green is very restful on the eyes.  It symbolizes harmony and growth.

Orange is a very hot color, its very stimulating and symbolizes strength and endurance.

Purple symbolizes power.  Most pre adolescent children prefer purple to all other colors.


A system to ensure that color remains the same regardless of the device of the medium being used.

Pantone color system, CMYK color matching system.


Offset printers are used in printing newspapers, magazines.  It is a less costly form of printing.

screen print uses a stencil and a woven mesh the control the ink.

Commonly used for printing on T-shirts.

Inkjet printers one line at a time by releasing the ink in the areas it belongs.

Most common printer for the home.

Laser printers uses a laser to produce the color on paper.


Color is the most important design element in advertising.

Ex restaurants such as McDonalds and KFC and many more use Red because its known for stimulating your appetite.


Jason/Vanessa_ Computer color

Additive color mixing.

Additive colors mixing two or more light colors to create white light. The Primary colors in this case is REG, GREEN and BLUE. When the primary additive colors are mixed the secondary colors are the same as the primary subtractive colors that we know of pigments and dyes. Additive colors are mostly used in computer monitors, televisions and stage lighting.

Pixels in LCD and most other types of color video displays is composed of red, green and blue sub-pixels, the light from which combines in various proportions to produce all the other colors as well as white and shades of gray. The colored sub-pixels do not overlap on the screen, but when viewed from a normal distance they overlap and blend on the eye’s retina, producing the same result as external superimposition.




A hex triplet is a six-digit, three-byte hexadecimal number used in HTML to represent color. The bytes represent red, green and blue and is represented with a number ranging from 0-255. The hex is represented with three double digit numbers 00 and three double digit letters FF. The byte 0 and Hex 00 having the lowest value which is black. Byte 255 Hex FF having the highest value which is white. The combination of red, green and blue with a value of 0- 255 there is more then 16 million different colors.


RGB is a color model used on displays where red, green, and blue light are combined to make millions of colors. There are many models used to measure and describe color. The RGB color model is based on the theory that all visible colors can be created using the primary additive colors red, green and blue.

These colors are known as primary additives because when combined in equal amounts they produce white


RGBA stands for RED, GREEN, BLUE and ALPHA. RGBA is similar to RGB with the addition of opacity channel, which has a pixel value of 0% to 100%. 0% being completly transperent and 100% being fully opaque.

rgba img_bronze_rgba