#646bcd

Indigo

Closest match (96% match)

Color formats

RGB

rgb(100, 107, 205)

Red, Green, Blue components

HSL

hsl(236, 51%, 60%)

Hue, Saturation, Lightness

CMYK

cmyk(51, 48, 0, 20)

Print color encoding

Luminance

0.176

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#646bcd

#cdc664

Analogous (Adjacent)

#64a0cd

#646bcd

#9164cd

Triadic

#646bcd

#cd646b

#6bcd64

Split complementary

#646bcd

#cd9164

#a0cd64

Complete conversion table

HEX

#646BCD

RGB

rgb(100,107,205)

RGBA

rgba(100,107,205, 1)

HSL

hsl(236,51.22%,59.8%)

OKLCH (Modern CSS)

oklch(0.57 0.15 277.5)

CSS Variable

--color: #646bcd;

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

4.64

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

4.53

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#646bcd#9697cd

ORIG

SIM

Deuteranopia (green)

#646bcd#8a84cd

ORIG

SIM

Tritanopia (blue)

#646bcd#645d68

ORIG

SIM

Monochrome (color blind)

#646bcd#75747a

Mixing guide

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

MIXING PALETTE

67%

32%

RYB PIGMENTS

Ultramarine blue

Pigment

67%

Titanium white

Pigment

32%

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)

17.6%

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.

Loch Ness

#5F6DB0

Savoy Blue

#4B61D1

Flood

#6677BB

God of Rain

#4466CC

Sundance

#CDC664

Amethyst

#9164CD

Danube

#64A0CD

Chestnut Rose

#CD646B

Mantis

#6BCD64

Antique Brass

#CD9264

Melrose

#A1A2FF

Jacksons Purple

#213892