Red

Color pages [1] [2] [3] [4] [5]

Where is Red? http:// www.agu.ac.jp / ~vicks62 / jeffreyb / red. html

Color Cube

Let's slice our Color Cube (photo on left) into sixteen layers (0 to 15=f) perpendicular to the red axis. The top layer (bird's eye view below) has 256 colors. All of them composed of 15 units of light. Let's look at the arrangement. We have bright red (hex code ff-0000) in the lower left corner and magenta (ff-00-ff), yellow (ffff-00), and white (ffffff) in the others. As we move in a straight line from red to each of the other corners, we are adding green (horizontally) and/or blue (vertically) units of light. They interact with the red light. Each unit of blue combines with a unit of red, converting it into a unit of magenta light (b+r=m). Likewise each unit of green converts a red unit to yellow (g+r=y).

Reoriented
White (top)

Black
(bottom)

Combining an equal number of green and blue units with red converts that same number of red units into white units (g+b+r=w). That's what happens when you move diagonally from the red corner to the white one. This diagonal line divides our layer into two trianglular areas: a magenta area and a yellow one. As you move around inside each area, you flip some of the 15 units of light. Moving perpendicular to the red-white line flips red units to white as you move up and to the right. It flips white units to red as you move in the opposite direction (down and to the left).

Inside the Magenta Triangle, moving horizontally (perpendicular to the magenta-white line) flips magenta to white if you go right, and white to magenta if you go left. Moving vertically flips magenta to red (down) OR red to magenta (up). Inside the Yellow Triangle on the other hand, moving vertically flips white and yellow, while moving horizontally flips red and yellow. What do you suppose happens when you move diagonally from the magenta corner to the yellow one? As you move through the Magenta Triangle, you flip two units of magenta to one red unit and one white. After you cross into the Yellow Triangle, you flip one red unit and one white unit into two yellow ones.

color systems	pigment	Crayola	Munsell	Natural CS	Pantone
rr-gg-bb	ed-1b-24	ee-20-4d	f2-00-3c	c4-02-34	ed-28-39
red

r-g-b	e22	e25	e04	c03	e23
units of light	m[ 0] [ 2]w r [12] [ _]y	m[ 3] [ 2]w r [ 9] [ _]y	m[ 4] [ 0]w r [10] [ _]y	m[ 3] [ 0]w r [ 9] [ _]y	m[ 1] [ 2]w r [11] [ _]y

Above are some other versions of "red". Let's mark their upward projections with an "x" on the top layer of the Color Cube (below).


000 black	f00 red	f0f magenta	ff0 yellow	fff white

This is the red "pallette". You can use
magenta OR yellow, but NOT together.

What about some other shades of red (including pink)? Where are they? What are their proportions?

	(pk) pink = fbc	m[ 1] [11]w r [ 3] [__]y
	(bb) light pink = fbb	m[ _] [11]w r [ 4] [ _]y
	(cp) carnation pink = fac	m[ 2] [10]w r [ 3] [ _]y
	(sp) salmon pink = f9a	m[ 1] [ 9]w r [ 5] [ _]y
	(sh) shocking pink = f7f	m[ 8] [ 7]w r [ 0] [ _]y
	(ht) hot pink = f6b	m[ 5] [ 6]w r [ 4] [ _]y
	(fr) french pink = f69	m[ 3] [ 6]w r [ 6] [ _]y
	(dp) deep pink = f19	m[ 8] [ 1]w r [ 6] [ _]y
	(rs) rose = f07	m[ 7] [ 0]w r [ 8] [ _]y

[red] [yellow] [green] [cyan] [blue] [magenta]
Black = 0 [1] [2] [3] [4] [5] [6] [7]

m [15]
ff-00-ff sh f w [15]
ffffff

ff-00-ee e iv
ffff-ee

ff-00-dd d
ffff-dd

ff-00-cc cp pk c mg
ffff-cc

ff-00-bb ht b
ffff-bb

ff-00-aa sp a pe ap
ffff-aa

ff-00-99 dp fr 9 lm
ffff-99

ff-00-88 8
ffff-88

ff-00-77 rs 7 sm ls
ffff-77

ff-00-66 x1 6 bs gr
ffff-66

ff-00-55 x1 5 cr tn ms
ffff-55

ff-00-44 x1 4 tm
ffff-44

ff-00-33 x1 or mb
ffff-33

ff-00-22 2
ffff-22

ff-00-11 1 pm
ffff-11
r [15]
ff-0000 0 sc hO am hG y [15]
ffff-00

green [0] 0 1 2 3 4 5 6 7 8 9 a b c d e f green [15]

(iv) ivory = ffe m[ _] [14]w
r [ 0] [ 1]y
(lm) lemon yellow = ff9 m[ _] [ 9]w
r [ 0] [ 6]y
(ap) apricot = fda m[ _] [10]w
r [ 2] [ 3]y
(gr) golden rod = fd6 m[ _] [ 6]w
r [ 2] [ 7]y
(ms) Mustard = fd5 m[ _] [ 5]w
r [ 2] [ 8]y
(pe) peach = fca m[ _] [10]w
r [ 3] [ 2]y
(am) amber = fb0 m[ _] [ 0]w
r [ 4] [11]y
(ls) light salmon = f97 m[ _] [ 6]w
r [ 6] [ 2]y
(tn) tan = f95 m[ _] [ 5]w
r [ 6] [ 4]y
(sm) salmon = f87 m[ _] [ 7]w
r [ 7] [ 1]y
(bs) bittersweet = f76 m[ _] [ 6]w
r [ 8] [ 1]y
(cr) coral = f75 m[ _] [ 5]w
r [ 8] [ 2]y
(or) orange = f73 m[ _] [ 3]w
r [ 8] [ 4]y
(pm) pumpkin = f71 m[ _] [ 1]w
r [ 8] [ 6]y
(tm) tomato = f64 m[ _] [ 4]w
r [ 9] [ 2]y
(sc) scarlet = f20 m[ _] [ 0]w
r [13] [ 2]y

Upper projections (on the right) of darker colors (less than 15 units of light) in the Red Zone:


	Violet = e8e	+111=f9f
	crimson = d14	+222=f36
	Indian red = c55	+333=f88
	Firebrick = a22	+555=f77
	dark red = 800	+777=f77

	Dark Salmon = e97	+111=fa8
	mustard yellow = da0	+222=fc2

Last updated March 2025
contact information

	(iv) ivory = ffe	m[ _] [14]w r [ 0] [ 1]y
	(lm) lemon yellow = ff9	m[ _] [ 9]w r [ 0] [ 6]y
	(ap) apricot = fda	m[ _] [10]w r [ 2] [ 3]y
	(gr) golden rod = fd6	m[ _] [ 6]w r [ 2] [ 7]y
	(ms) Mustard = fd5	m[ _] [ 5]w r [ 2] [ 8]y
	(pe) peach = fca	m[ _] [10]w r [ 3] [ 2]y
	(am) amber = fb0	m[ _] [ 0]w r [ 4] [11]y
	(ls) light salmon = f97	m[ _] [ 6]w r [ 6] [ 2]y
	(tn) tan = f95	m[ _] [ 5]w r [ 6] [ 4]y
	(sm) salmon = f87	m[ _] [ 7]w r [ 7] [ 1]y
	(bs) bittersweet = f76	m[ _] [ 6]w r [ 8] [ 1]y
	(cr) coral = f75	m[ _] [ 5]w r [ 8] [ 2]y
	(or) orange = f73	m[ _] [ 3]w r [ 8] [ 4]y
	(pm) pumpkin = f71	m[ _] [ 1]w r [ 8] [ 6]y
	(tm) tomato = f64	m[ _] [ 4]w r [ 9] [ 2]y
	(sc) scarlet = f20	m[ _] [ 0]w r [13] [ 2]y