#1d3f9c

Fun Blue

Closest match (91% match)

Color formats

RGB

rgb(29, 63, 156)

Red, Green, Blue components

HSL

hsl(224, 69%, 36%)

Hue, Saturation, Lightness

CMYK

cmyk(81, 60, 0, 39)

Print color encoding

Luminance

0.062

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#1d3f9c

#9c7a1d

Analogous (Adjacent)

#1d7e9c

#1d3f9c

#3b1d9c

Triadic

#1d3f9c

#9c1d3f

#3f9c1d

Split complementary

#1d3f9c

#9c3b1d

#7f9c1d

Complete conversion table

HEX

#1D3F9C

RGB

rgb(29,63,156)

RGBA

rgba(29,63,156, 1)

HSL

hsl(223.94,68.65%,36.27%)

OKLCH (Modern CSS)

oklch(0.40 0.16 264.8)

CSS Variable

--color: #1d3f9c;

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

9.36

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.24

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#1d3f9c#68699c

ORIG

SIM

Deuteranopia (green)

#1d3f9c#4c439c

ORIG

SIM

Tritanopia (blue)

#1d3f9c#1f2a2f

ORIG

SIM

Monochrome (color blind)

#1d3f9c#46464e

Mixing guide

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

MIXING PALETTE

60%

36%

RYB PIGMENTS

Ultramarine blue

Pigment

60%

Ivory black

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)

6.2%

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.

Cascade Twilight

#234893

Liquid Denim

#2D3796

Smalt

#003399

Denim

#2243B6

Reef Gold

#9C7A1D

Daisy Bush

#3B1D9C

Matisse

#1D7E9C

Claret

#9C1D3F

Vida Loca

#3F9C1D

Cognac

#9C3B1D

Havelock Blue

#6472D8

Midnight Blue

#001364