Colors That Start With O — Names, Hex Codes, RGB & Origins

Q: How many CSS named colors start with the letter O?

Six of the W3C/CSS named colors begin with O: orange (#FFA500), orangered (#FF4500), orchid (#DA70D6), olive (#808000), olivedrab (#6B8E23) and oldlace (#FDF5E6).

Q: What is the most familiar color that starts with O?

Orange — both a standard CSS keyword (#FFA500) and one of the few colors named after an object (the fruit) rather than the other way around.

Q: Which O colors come from Crayola?

Several here are Crayola crayon colors: Orange (#FF7538), Orange-Red (#FF5349), Orange Soda (#FA5B3D), Orchid (#E29CD2), Outer Space (#2D383A) and the fluorescent Outrageous Orange (#FF6037), introduced in 1972.

Oc

10 colors

See Color Details Ocean #017B92 See All Blue Shades

See Color Details Ocean Blue #03719C See All Blue Shades

See Color Details Ocean Blue (Indigo) #4F42B5 See All Violet Shades

See Color Details Ocean Boat Blue #0077BE See All Blue Shades

See Color Details Ocean Green (Bright) #48BF91 See All Green Shades

See Color Details Ocean Green (Deep) #3D9973 See All Green Shades

See Color Details Ocher #BF9B0C See All Yellow Shades

See Color Details Ochre #CC7722 See All Orange Shades

See Color Details Ochre (Yellow) #BF9005 See All Yellow Shades

See Color Details Ocre #C69C04 See All Yellow Shades

Of

5 colors

See Color Details Off Blue #5684AE See All Blue Shades

See Color Details Off Green #6BA353 See All Green Shades

See Color Details Off White #FAF9F6 See All White Shades

See Color Details Off White (Cream) #FFFFE4 See All White Shades

See Color Details Off Yellow #F1F33F See All Yellow Shades

Og

1 color

See Color Details Ogre Odor #FD5240 See All Orange Shades

Ol

19 colors

See Color Details Old Burgundy #43302E See All Brown Shades

See Color Details Old Gold #CFB53B See All Yellow Shades

See Color Details Old Lace #FDF5E6 See All White Shades

See Color Details Old Lavender #796878 See All Gray Shades

See Color Details Old Mauve #673147 See All Purple Shades

See Color Details Old Moss Green #867E36 See All Green Shades

See Color Details Old Pink #C77986 See All Pink Shades

See Color Details Old Rose #C08081 See All Pink Shades

See Color Details Old Rose (Pink) #C87F89 See All Pink Shades

See Color Details Old Silver #848482 See All Gray Shades

See Color Details Olive #808000 See All Green Shades

See Color Details Olive Brown #645403 See All Brown Shades

See Color Details Olive Drab #6B8E23 See All Green Shades

See Color Details Olive Drab #7 #3C341F See All Brown Shades

See Color Details Olive Drab (Muted) #6F7632 See All Green Shades

See Color Details Olive Green (Deep) #677A04 See All Green Shades

See Color Details Olive Green (Light) #B5B35C See All Green Shades

See Color Details Olive Yellow #C2B709 See All Yellow Shades

See Color Details Olivine #9AB973 See All Green Shades

On

1 color

See Color Details Onyx #353839 See All Gray Shades

Op

3 colors

See Color Details Opal #A8C3BC See All Green Shades

See Color Details Opera Mauve #B784A7 See All Purple Shades

See Color Details Opera Red #FF1B2D See All Red Shades

Or

28 colors

See Color Details Orange #FFA500 See All Orange Shades

See Color Details Orange (Color Wheel) #FF7F00 See All Orange Shades

See Color Details Orange (Color Wheel) #FF8000 See All Orange Shades

See Color Details Orange (Crayola) #FF7538 See All Orange Shades

See Color Details Orange (Deep) #FF5800 See All Orange Shades

See Color Details Orange (RYB) #FB9902 See All Orange Shades

See Color Details Orange (Vivid) #FF6600 See All Orange Shades

See Color Details Orange Brown #BE6400 See All Brown Shades

See Color Details Orange Peel #FF9F00 See All Orange Shades

See Color Details Orange Pink #FF6F52 See All Orange Shades

See Color Details Orange Red #FF4500 See All Orange Shades

See Color Details Orange Red (Crayola) #FF5349 See All Red Shades

See Color Details Orange Red (Vivid) #FD411E See All Red Shades

See Color Details Orange Soda #FA5B3D See All Orange Shades

See Color Details Orange Yellow #F8D568 See All Yellow Shades

See Color Details Orange Yellow (Bright) #FFAD01 See All Yellow Shades

See Color Details Orange Yellow (Deep) #F5BD1F See All Yellow Shades

See Color Details Orangeish #FD8D49 See All Orange Shades

See Color Details Orangey Brown #B16002 See All Brown Shades

See Color Details Orangey Red #FA4224 See All Red Shades

See Color Details Orangey Yellow #FDB915 See All Yellow Shades

See Color Details Orangish #FC824A See All Orange Shades

See Color Details Orangish Brown #B25F03 See All Brown Shades

See Color Details Orangish Red #F43605 See All Red Shades

See Color Details Orchid #DA70D6 See All Purple Shades

See Color Details Orchid (Crayola) #E29CD2 See All Purple Shades

See Color Details Orchid Pink #F2BDCD See All Pink Shades

See Color Details Orioles Orange #FB4F14 See All Orange Shades

Ou

5 colors

See Color Details OU Crimson Red #841617 See All Red Shades

See Color Details Outer Space #2D383A See All Gray Shades

See Color Details Outer Space (Slate) #414A4C See All Gray Shades

See Color Details Outrageous Orange #FF6037 See All Orange Shades

See Color Details Outrageous Orange (Light) #FF6E4A See All Orange Shades

Ox

5 colors

See Color Details Oxblood #800020 See All Red Shades

See Color Details Oxblood (Deep) #4A0000 See All Red Shades

See Color Details Oxford Blue #002147 See All Blue Shades

See Color Details Oxley #6D9A79 See All Green Shades

See Color Details Oxley (Light) #779E86 See All Green Shades

Common Questions About O-Colors

How many CSS named colors start with the letter O?

Six of the W3C/CSS named colors begin with O: orange (#FFA500), orangered (#FF4500), orchid (#DA70D6), olive (#808000), olivedrab (#6B8E23) and oldlace (#FDF5E6).

What is the most familiar color that starts with O?

Orange — both a standard CSS keyword (#FFA500) and one of the few colors named after an object (the fruit) rather than the other way around.

Which O colors come from Crayola?

Several here are Crayola crayon colors: Orange (#FF7538), Orange-Red (#FF5349), Orange Soda (#FA5B3D), Orchid (#E29CD2), Outer Space (#2D383A) and the fluorescent Outrageous Orange (#FF6037), introduced in 1972.

Why does “Olive Drab #7” keep its number?

Unlike the descriptive tags used elsewhere on this page, the #7 is part of a real designation: Olive Drab #7 (#3C341F) was a standardized U.S. Army uniform shade, so the number is the name rather than a disambiguator.

Why do so many O colors share a name with a number after it?

Catalogs reuse names like “Orange” or “Ocean Blue” for slightly different hex values. Rather than keep bare numbers, each variant here carries a short descriptive tag (for example Deep, Web, Color Wheel) or its source catalog (Crayola, RYB).

Oc

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Common Questions About O-Colors

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