#031f63

Gulf Blue

Closest match (97% match)

Color formats

RGB

rgb(3, 31, 99)

Red, Green, Blue components

HSL

hsl(223, 94%, 20%)

Hue, Saturation, Lightness

CMYK

cmyk(97, 69, 0, 61)

Print color encoding

Luminance

0.019

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#031f63

#634703

Analogous (Adjacent)

#034f63

#031f63

#170363

Triadic

#031f63

#63031f

#1f6303

Split complementary

#031f63

#631703

#4f6303

Complete conversion table

HEX

#031F63

RGB

rgb(3,31,99)

RGBA

rgba(3,31,99, 1)

HSL

hsl(222.5,94.12%,20%)

OKLCH (Modern CSS)

oklch(0.27 0.12 262.9)

CSS Variable

--color: #031f63;

Preview

Readability and Typography

Headline Test

This text demonstrates the reading experience on this background color.

Headline Test

This text demonstrates the reading experience on this background color.

UI Component Set

This is an example alert bar using the selected color.

SOLIDSOFTOUTLINE

Product Mockup

4582 •••• •••• 9018

CARDHOLDER

JOHN DOE

VALID

12/28

Mobile application

Customer support

Hi! How can we help you today?

I love this new color! 😍

Data visualization

Weekly growth

+1,240

12.5%

WED

2,450

Contrast

Contrast and readability (WCAG)

On white background

15.22

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.38

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#031f63#3d3e63

ORIG

SIM

Deuteranopia (green)

#031f63#262063

ORIG

SIM

Tritanopia (blue)

#031f63#041012

ORIG

SIM

Monochrome (color blind)

#031f63#262626

Mixing guide

How to mix this color using physical paints or printing inks.

MIXING PALETTE

61%

36%

RYB PIGMENTS

Ivory black

Pigment

61%

Ultramarine blue

Pigment

36%

Cadmium yellow

Pigment

Unlike light, mixing paints makes colors darker. This simulation mimics the behavior of physical pigments.

Physical properties

Perceptual and light-related properties derived from the digital color.

Spectral relationship

Blue hue

450–495 nm • closest visible-spectrum range

750 nm

380 nm

Visual temperature

Cool

A perceptual warm–cool classification. Kelvin does not apply to an arbitrary interface color.

Cool

Neutral

Warm

Luminance (brightness)

1.9%

Dark • relative luminance

50%

100%

An RGB color is produced by combined screen light, so this range is a visual comparison rather than an exact physical wavelength.

Gradient gallery

Generate premium CSS backgrounds and textures from your color.

Similar & Related Colors

Mathematically computed harmonies, shades, and similar tones for this color.

Midnight Melancholia

#002266

Deep Sea Nightmare

#002366

Dark Sapphire

#082567

Black Sea Night

#052462

Antique Bronze

#634703

Paua

#170363

Teal Blue

#034F63

Black Rose

#63031F

Japanese Laurel

#1F6303

Red Oxide

#631703

Victoria

#4A4E9B

Stratos

#000031