- Two common types of red-green colour blindness are protanomaly and protanopia.
- Protanomaly means that red cone photopigments are abnormal, and protanopia means that there are no working red cone cells at all.
- The colours of famous US landmarks appear muted to people with colour blindness.
About 8% of men and 0.5% of women with Northern European ancestry have red-green colour blindness, according to the National Eye Institute. Depending on the type of colour blindness, they might see colours less vibrantly or not be able to see certain colours at all.
While being colorblind doesn’t tend to significantly hinder one’s daily life, it can make tasks such as reading colour-coded charts, buying ripe produce, picking out matching clothes, and reading maps difficult. Travellers with colour blindness might also find that they see famous landmarks differently.
We put photos of 10 US landmarks through an online colour blindness simulator called Coblis to see what they would look like with different kinds of red-green colour blindness.
Here are 30 photos that show what beautiful US destinations look like if you’re colorblind.
The Grand Canyon contains red and orange layers of rock with normal vision.
It’s one of the Seven Wonders of the World.
With protanomaly, it looks more brown.
Protanomaly is a type of colour blindness where red cone photopigments are abnormal and colours don’t appear as vibrant.
Protanopia eliminates most of the colour differences.
Protanopia means that there are no working red cone cells at all – red often looks black and orange, yellow, and green all look yellow.
People come from all over the world to see the Skagit Valley Tulip Fields in Washington.
Last year, the annual tulip festival attracted people from all 50 states and 93 countries.
If you have protanomaly, the bright pink tulips appear more of a muted dusty colour.
With protanopia, the tulips blend in with the leaves.
It is hard to tell that these are tulips.
Yellowstone National Park’s Grand Prismatic Spring gets its colours from bacteria living around the spring.
The water comes from a crack in the ground running 121 feet deep.
Protanomaly mutes the vibrant rings of colour around the spring.
The different colours are still visible.
With protanopia, there’s no distinction between any of the colours.
All of the rings look yellow.
The Wave in Coyote Buttes North, Arizona, became famous as a Microsoft desktop image in 2009.
Because of its fragility, the Bureau of Land Management only allows 20 people to visit per day as determined by a lottery.
The Wave looks more brown to someone with protanomaly.
It’s less orange.
With protanopia, the Wave looks more yellow but the lines are still visible.
People with colorblindness can still see the effect.
New York City’s Central Park in the fall is bursting with brightly coloured leaves.
Central Park covers 843 acres of land.
Instead of a mix of reds, greens, and browns, the leaves look yellow with protanomaly.
It still looks like fall in New York City.
With protanopia, the trees look even more uniformly yellow.
It’s hard to tell the difference between colours.
Lava glows bright orange at Hawaii Volcanoes National Park.
Visitors can get up close and personal with active, lava-burbling volcanoes.
The lava looks yellowish orange with protanomaly.
It’s still visible.
Protanopia makes the lava appear a highlighter yellow.
People with colorblindness can still see the lava.
The Library of Congress in Washington DC features maroon accents and ornate columns.
The Library of Congress is the largest library in the world.
The maroon fades to a brownish-pink with protanomaly.
The yellow paint still looks the same.
With protanopia, the maroon paint looks grey.
The red colouring disappears.
The Golden Gate Bridge is the defining landmark of San Francisco.
The Golden Gate Bridge is located along the Pacific Coast Highway.
People with protanomaly might see the bridge as a darker orange colour instead of red.
It doesn’t stand out as much.
People with protanopia might see it as the same colour as the grassy hills surrounding it.
The red bridge appears green.
Arches National Park in Utah is nature’s sculpture garden.
The park contains over 2,000 stone arches.
The orange arches appear dampened with protanomaly.
It’s not the same colour of orange.
They look yellow with protanopia.
Colorblindness reduces the intensity of the arch’s appearance.
The iconic “Welcome to Las Vegas” sign greets visitors to the Las Vegas strip.
The strip is home to some of the best hotels in America.
The sign appears more subdued with protanomaly.
The red isn’t as bright.
With protanopia, it resembles a vintage sepia photo.
- Read more:
- Here’s why men are much more likely to be colorblind
- These photos show what the world looks like when you’re colorblind
- These black and white clothes created a viral optical illusion that’s playing tricks on people’s eyes
- Here’s everything you think you know, but don’t, about colorblindness
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