#588dc3

Steel Blue

Closest match (95% match)

Color formats

RGB

rgb(88, 141, 195)

Red, Green, Blue components

HSL

hsl(210, 47%, 55%)

Hue, Saturation, Lightness

CMYK

cmyk(55, 28, 0, 24)

Print color encoding

Luminance

0.251

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#588dc3

#c38e58

Analogous (Adjacent)

#58c3c3

#588dc3

#5958c3

Triadic

#588dc3

#c3588d

#8dc358

Split complementary

#588dc3

#c35958

#c3c358

Complete conversion table

HEX

#588DC3

RGB

rgb(88,141,195)

RGBA

rgba(88,141,195, 1)

HSL

hsl(210.28,47.14%,55.49%)

OKLCH (Modern CSS)

oklch(0.63 0.10 250.1)

CSS Variable

--color: #588dc3;

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

3.49

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

6.01

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#588dc3#a5a5c3

ORIG

SIM

Deuteranopia (green)

#588dc3#7f78c3

ORIG

SIM

Tritanopia (blue)

#588dc3#5b6874

ORIG

SIM

Monochrome (color blind)

#588dc3#898989

Mixing guide

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

MIXING PALETTE

69%

21%

10%

RYB PIGMENTS

Ultramarine blue

Pigment

69%

Titanium white

Pigment

21%

Cadmium yellow

Pigment

10%

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)

25.1%

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.

Sea Salt Rivers

#5087BD

Marina

#5A88C8

Magical Merlin

#3D8ED0

Winter Lakes

#5C97CF

Twine

#C38E58

Indigo

#5958C3

Fountain Blue

#58C3C3

Mulberry

#C3588D

Mantis

#8DC358

Fuzzy Wuzzy Brown

#C35958

Anakiwa

#95C7FF

Atoll

#0E5789