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What color do blue and gray make?

Mixed as paint, blue and gray make a blue. Change the ratio, switch to light or CSS mixing, and copy the result.

Colors to mix

1

50%

1

50%

Paint mode simulates real pigments with the Kubelka-Munk model, so blue and yellow make green, just like on a palette.

blue

#407299 · blue

HEX

RGB

HSL

OKLCH

Contrast 5.14:1 with white, 4.08:1 with black

Blend steps

All color 1

Click a step to use its ratio

All color 2

Add white

20%

40%

60%

80%

Add black

20%

40%

60%

80%

Using #407299 in a UI? Atmos builds an accessible shade scale from it.

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Blue and gray make blue

Mixed as paint, blue and gray make a blue (#407299). As light on a screen, they make a blue (#8D9CF8), and blended in CSS with OKLCH they give a blue (#5473B4).

blue

#407299

As paint

Pigments absorb light, so every color you add takes some away. This is what you get on a palette or canvas.

blue

#8D9CF8

As light

Colored lights add up, as on a screen or stage. Mixes get brighter, not darker.

blue

#5473B4

In CSS (OKLCH)

What color-mix(in oklch, …) returns for an even mix in the browser.

Mixing blue and gray in different ratios

The ratio decides which color leads. These are paint mixes, measured in equal-sized parts.

3:1 · #2964A8

3 blue : 1 gray, blue

2:1 · #3069A2

2 blue : 1 gray, blue

1:1 · #407299

1 blue : 1 gray, blue

1:2 · #527A93

1 blue : 2 gray, muted blue

1:3 · #5C7F90

1 blue : 3 gray, muted teal

Making the mix lighter or darker

Add white for tints and black for shades. Each step adds 20% more of it to the even blue and gray mix.

With white

#6297B9

20%

#7EAFCB

40%

#99C3DA

60%

#B7D7E7

80%

With black

#3F667E

20%

#3C5866

40%

#36484E

60%

#2A3234

80%

Need a full scale for a UI instead? The shade generator builds evenly spaced, accessible shades from any color.

Mixing blue and gray FAQ

Mixed as paint, blue and gray make a blue (#407299). As light on a screen, they make a blue (#8D9CF8), and blended in CSS with OKLCH they give a blue (#5473B4).

Light adds up instead of absorbing, so blue and gray light make a blue (#8D9CF8). That is why screens can show bright yellows from red and green light, while the same paints would turn brown.

Change the ratio. Three parts blue to one part gray gives a blue (#2964A8), while one part blue to three parts gray gives a muted teal (#5C7F90). To lighten the result add white, and to darken it add a little black.

Use color-mix(in oklch, #1D4ED8 50%, #8A8A8A 50%), which gives #5473B4. OKLCH keeps the middle of the mix bright, while mixing in sRGB tends to turn it gray.