#1F3137 Color Information

Hex color code: #1F3137

A rich blue shade, #1F3137 appears as (31, 49, 55) in RGB and (195°, 28%, 17%) in HSL. It is often used for branding and logos.

Try:

Color NameDark Slate Gray

HEX

#1F3137

RGB

31, 49, 55

HSL

195°, 28%, 17%

CMYK

44%, 11%, 0%, 78%

Shades

CSS Usage

color: #1F3137;
background-color: #1F3137;
border-color: #1F3137;
box-shadow: 0 0 10px #1F3137;
border: 2px solid #1F3137;

Tailwind Usage

bg-[#1F3137]
text-[#1F3137]
border-[#1F3137]
shadow-[0_0_10px_1F3137]

Generate Gradient

→

Gradient CSS

background: linear-gradient(90deg, #1F3137, #FF5733);

Preview in UI

Button

.btn-primary { background-color: #1F3137; color: #FFFFFF; }

Badge

New Feature

.badge { background-color: #1F3137; color: #FFFFFF; }

Text Highlight

The quick brown fox jumps over the lazy dog. highlighted text example shows how the color looks as a text highlight.

Card

Card Title

This card uses your color as a border accent.

.card-accent { border: 2px solid #1F3137; background-color: #1F313715; }

Alert / Toast

This is an alert using your color as accent.

.alert { background-color: #1F313720; border-left: 4px solid #1F3137; }

Link / Accent

This is a paragraph with a link using your color. The color can be applied to interactive elements.

a { color: #1F3137; }

Related Colors

Complementary

Analogous

Triadic

Split Complementary

Tetradic

Monochromatic

Popular Colors

Common HEX Colors

Color Theory

Relationships based on the position of #1F3137 in the color wheel.

● Current● Complementary● Triadic● Analogous

RGB, HSL and CMYK Values

RGB

31, 49, 55

Red: 31 / Green: 49 / Blue: 55

HSL

195°, 28%, 17%

Hue: 195° / Saturation: 28% / Lightness: 17%

CMYK

44%, 11%, 0%, 78%

Cyan: 44% / Magenta: 11% / Yellow: 0% / Key: 78%

What color is #1F3137?

#1F3137 is a very dark shade associated with sophistication and elegance.

Color Shades

Complementary Colors

37251F

Color Palette

HEX to RGB

Convert #1F3137 to RGB:

rgb(31, 49, 55)HEX to RGB Converter →

HEX to HSL

Convert #1F3137 to HSL:

hsl(195, 28%, 17%)RGB to HSL Converter →

HEX to CMYK

Convert #1F3137 to CMYK:

cmyk(44%, 11%, 0%, 78%)Color Converter →

Color Meaning and Usage

A intense blue tone, #1F3137 has RGB (31, 49, 55) and HSL (195°, 28%, 17%). Known for evoking sophistication and elegance, this very dark shade is a common choice for dashboards and SaaS products. Lighter variations like #FFFFFF create softer gradients.

The complementary color of #1F3137 is #37251F, creating high-contrast pairings. For softer combinations, try analogous colors like #1F3731.

Use #1F3137 in CSS: color: #1F3137 or background-color: #1F3137. Create palettes with Color Palette Generator or check contrast with Contrast Checker.

Contrast with #1F3137

Sample text on this color - The quick brown fox jumps over the lazy dog.

Contrast Ratio: 1.55:1

WCAG AA: Fail

WCAG AAA: Fail

Need more control? Contrast Checker →

Frequently Asked Questions

What color is #1F3137?

#1F3137 is a intense blue color - a very dark shade that evokes sophistication and elegance.

What is the RGB value of #1F3137?

#1F3137 in RGB is (31, 49, 55) - 31 red, 49 green, and 55 blue.

How to use #1F3137 in CSS?

Use #1F3137 directly in your CSS properties like color or background-color.

What colors go well with #1F3137?

#37251F (complementary), #1F3731 (analogous), and #040607 (lighter shade) work well with #1F3137.