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Slate Blue vs Cornflower Blue: What's the Difference?

The main difference between Slate Blue and Cornflower Blue is hue — Slate Blue is a cool purple, while Cornflower Blue is a cool blue. Slate Blue and Cornflower Blue are often confused but have distinct differences in hue, saturation, and tone. Slate Blue (#6A5ACD) and Cornflower Blue (#6495ED) each suit different design contexts — understanding their differences helps you choose the right color for your project.

Slate Blue#6A5ACD
Cornflower Blue#6495ED
#6A5ACDBlended: #6778DD#6495ED
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Slate Blue vs Cornflower Blue: Key Differences at a Glance

Aspect Slate Blue Cornflower Blue
BrightnessMedium (L=58%) — balanced, versatileLight (L=66%) — airy, soft, approachable
SaturationModerately saturated (S=53%) — balanced in intensityVivid (S=79%) — bright, energetic, eye-catching
Hue familyPurpleBlue
TemperatureCoolCool
Hex code#6A5ACD#6495ED
RGB106, 90, 205100, 149, 237

Can you use Slate Blue and Cornflower Blue together?

Cornflower Blue text on Slate Blue
Slate Blue text on Cornflower Blue
Contrast Ratio:1.79:1Insufficient Contrast

How to Tell Slate Blue and Cornflower Blue Apart

  • ●Look at lightness first: Cornflower Blue is noticeably lighter.
  • ●Check saturation: Cornflower Blue looks more vivid and saturated.
  • ●Watch the undertone: the hue shifts 29° between them, which changes the perceived temperature.
  • ●Compare them on a white background to see true saturation, and on black to see true lightness.

Slate Blue or Cornflower Blue: Which to Use and Where

Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.

◆Branding & logos
PickCornflower Blue

Cornflower Blue is more saturated (79% HSL vs 53%) so it reads as bolder and more memorable at logo scale, while Slate Blue can feel washed out when printed small.

▢Web UI & body text backgrounds
PickSlate Blue

Slate Blue hits a 5.31:1 WCAG contrast against white — safer for text-heavy interfaces — where Cornflower Blue only reaches 2.97:1 and risks failing AA at small body sizes.

⬡Fashion & apparel
PickCornflower Blue

Cornflower Blue is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Slate Blue leans cooler and is better suited to autumn/winter layering.

▣Interior design & walls
PickSlate Blue

Slate Blue is the more muted of the two (53% saturation) and sits more calmly on large wall surfaces, while Cornflower Blue's higher chroma can overwhelm a room when used beyond accent pieces.

When to Use Slate Blue vs Cornflower Blue in Design

Use Slate Blue for:
●Luxury and premium brands
●Creative and imaginative themes
●Beauty and wellness
●Spiritual and mystical design
●Night and evening moods
Use Cornflower Blue for:
●Tech and corporate trust
●Finance and banking brands
●Links and primary buttons
●Medical and professional UI
●Calm dependable visuals

Slate Blue and Cornflower Blue Hex Codes, RGB & HSL

Slate Blue#6A5ACD

Slate Blue (#6A5ACD) is a medium, moderately saturated purple with a cool undertone — it feels balanced, versatile and balanced in intensity.

HEX
RGB
HSL
HSV
CMYK
PANTONE
Shades
Tints
Cornflower Blue#6495ED

Cornflower Blue (#6495ED) is a light, vivid blue with a cool undertone — it feels airy, soft, approachable and bright, energetic, eye-catching.

HEX
RGB
HSL
HSV
CMYK
PANTONE
Shades
Tints

Slate Blue and Cornflower Blue WCAG Contrast Ratios

Text legibility depends on the contrast ratio between foreground and background. WCAG 2.1 AA requires at least 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Use these numbers to choose accessible combinations for your design.

Sample text preview
Slate Blue text on white
5.31:1AA
Sample text preview
Slate Blue text on black
3.96:1AA Large
Sample text preview
Cornflower Blue text on white
2.97:1Fail
Sample text preview
Cornflower Blue text on black
7.06:1AAA
Sample text preview
Slate Blue text on Cornflower Blue
1.79:1Fail
Sample text preview
Cornflower Blue text on Slate Blue
1.79:1Fail

More Slate Blue and Cornflower Blue Comparisons

IndigovsSlate BlueAzurevsCornflower BlueSlate BluevsIndigoIndigovsCornflower BlueSlate BluevsVioletCornflower BluevsVioletSteel BluevsSlate BlueCornflower BluevsLavenderRoyal BluevsSlate BlueSky BluevsCornflower BlueSlate BluevsPeriwinkleCeruleanvsCornflower Blue

Slate Blue vs Cornflower Blue FAQ

What is the difference between slate blue and cornflower blue?+
The main difference between Slate Blue and Cornflower Blue is hue — Slate Blue is a cool purple, while Cornflower Blue is a cool blue. Slate Blue and Cornflower Blue are often confused but have distinct differences in hue, saturation, and tone. Slate Blue (#6A5ACD) and Cornflower Blue (#6495ED) each suit different design contexts — understanding their differences helps you choose the right color for your project.
Is slate blue darker than cornflower blue?+
Yes. Slate Blue is darker, with a lightness of 58% in HSL compared to Cornflower Blue at 66% — a 8-point gap.
Are slate blue and cornflower blue the same color?+
No. Slate Blue is #6A5ACD and Cornflower Blue is #6495ED. They differ by 29° in hue, 8% in lightness, and 26% in saturation.
Which is more saturated, slate blue or cornflower blue?+
Cornflower Blue is more saturated. In HSL, Slate Blue has 53% saturation and Cornflower Blue has 79% — Cornflower Blue is the more vivid of the two, while Slate Blue reads as more muted.
Is slate blue warm or cool?+
Slate Blue (#6A5ACD) is a cool purple. Its hue sits at 248° on the color wheel, which places it in the cool range.
Is cornflower blue warm or cool?+
Cornflower Blue (#6495ED) is a cool blue. Its hue sits at 219° on the color wheel, which places it in the cool range.
Can you use slate blue and cornflower blue together?+
Yes. Slate Blue (purple) and Cornflower Blue (blue) can work as a complementary or analogous pair. Use one as the dominant tone and the other as a 10–20% accent to keep the palette balanced.
What color family does slate blue belong to?+
Slate Blue belongs to the purple family. Its HSL is 248°, 53%, 58% — a cool tone within the broader purple group.
What is the hex code for slate blue?+
The hex code for Slate Blue is #6A5ACD. In RGB, that's rgb(106, 90, 205), and in HSL it's hsl(248, 53%, 58%).
What is the hex code for cornflower blue?+
The hex code for Cornflower Blue is #6495ED. In RGB, that's rgb(100, 149, 237), and in HSL it's hsl(219, 79%, 66%).