#00358f

Smalt

Closest match (98% match)

Color formats

RGB

rgb(0, 53, 143)

Red, Green, Blue components

HSL

hsl(218, 100%, 28%)

Hue, Saturation, Lightness

CMYK

cmyk(100, 63, 0, 44)

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)

#00358f

#8f5a00

Analogous (Adjacent)

#007d8f

#00358f

#12008f

Triadic

#00358f

#8f0035

#358f00

Split complementary

#00358f

#8f1200

#7d8f00

Complete conversion table

HEX

#00358F

RGB

rgb(0,53,143)

RGBA

rgba(0,53,143, 1)

HSL

hsl(217.76,100%,28.04%)

OKLCH (Modern CSS)

oklch(0.36 0.16 261.0)

CSS Variable

--color: #00358f;

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

11.02

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.91

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#00358f#5d5e8f

ORIG

SIM

Deuteranopia (green)

#00358f#352b8f

ORIG

SIM

Tritanopia (blue)

#00358f#03191c

ORIG

SIM

Monochrome (color blind)

#00358f#3c3b42

Mixing guide

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

MIXING PALETTE

51%

44%

RYB PIGMENTS

Ultramarine blue

Pigment

51%

Ivory black

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.

One Minute to Midnight

#003388

Smalt

#003399

Below the Surface

#0A2F7C

Intergalactic Highway

#273287

Brown

#8F5A00

Navy Blue

#12008F

Blue Lagoon

#007D8F

Paprika

#8F0035

Limeade

#358F00

Red Berry

#8F1200

Indigo

#5767CA

Stratos

#000758