#40a4db

Havelock Blue

Closest match (91% match)

Color formats

RGB

rgb(64, 164, 219)

Red, Green, Blue components

HSL

hsl(201, 68%, 55%)

Hue, Saturation, Lightness

CMYK

cmyk(71, 25, 0, 14)

Print color encoding

Luminance

0.328

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#40a4db

#db7740

Analogous (Adjacent)

#40dbc5

#40a4db

#4056db

Triadic

#40a4db

#db40a4

#a4db40

Split complementary

#40a4db

#db4057

#dbc440

Complete conversion table

HEX

#40A4DB

RGB

rgb(64,164,219)

RGBA

rgba(64,164,219, 1)

HSL

hsl(201.29,68.28%,55.49%)

OKLCH (Modern CSS)

oklch(0.68 0.12 236.7)

CSS Variable

--color: #40a4db;

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

2.78

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

7.55

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#40a4db#bcbddb

ORIG

SIM

Deuteranopia (green)

#40a4db#796fdb

ORIG

SIM

Tritanopia (blue)

#40a4db#456975

ORIG

SIM

Monochrome (color blind)

#40a4db#9b9b9b

Mixing guide

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

MIXING PALETTE

71%

15%

14%

RYB PIGMENTS

Ultramarine blue

Pigment

71%

Titanium white

Pigment

15%

Cadmium yellow

Pigment

14%

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)

32.8%

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.

High Blue

#4CA8E0

Thalassophile

#44AADD

Sub-Zero

#57A1CE

Cousteau

#55A9D6

Red Damask

#DB7740

Royal Blue

#4056DB

Turquoise

#40DBC4

Cerise

#DB40A4

Conifer

#A4DB40

Cerise Red

#DB4057

Anakiwa

#86DFFF

Allports

#006C9F