#01397f

Congress Blue

Closest match (95% match)

Color formats

RGB

rgb(1, 57, 127)

Red, Green, Blue components

HSL

hsl(213, 98%, 25%)

Hue, Saturation, Lightness

CMYK

cmyk(99, 55, 0, 50)

Print color encoding

Luminance

0.045

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#01397f

#7f4701

Analogous (Adjacent)

#01787f

#01397f

#08017f

Triadic

#01397f

#7f0139

#397f01

Split complementary

#01397f

#7f0801

#787f01

Complete conversion table

HEX

#01397F

RGB

rgb(1,57,127)

RGBA

rgba(1,57,127, 1)

HSL

hsl(213.33,98.44%,25.1%)

OKLCH (Modern CSS)

oklch(0.36 0.13 257.7)

CSS Variable

--color: #01397f;

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

11.09

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.89

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#01397f#58597f

ORIG

SIM

Deuteranopia (green)

#01397f#30277f

ORIG

SIM

Tritanopia (blue)

#01397f#041b1f

ORIG

SIM

Monochrome (color blind)

#01397f#3c3c3c

Mixing guide

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

MIXING PALETTE

50%

44%

RYB PIGMENTS

Ivory black

Pigment

50%

Ultramarine blue

Pigment

44%

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)

4.5%

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.

Tardis Blue

#003B6F

One Minute to Midnight

#003388

Atlantic Navy

#13336F

Lost in Space

#03386A

Cinnamon

#7F4701

Navy Blue

#08017F

Blue Lagoon

#01787F

Siren

#7F0139

Verdun Green

#397F01

Maroon

#7F0801

San Marino

#516BB9

Stratos

#000A49