#333440

Tuna

Closest match (99% match)

Color formats

RGB

rgb(51, 52, 64)

Red, Green, Blue components

HSL

hsl(235, 11%, 23%)

Hue, Saturation, Lightness

CMYK

cmyk(20, 19, 0, 75)

Print color encoding

Luminance

0.035

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#333440

#403f33

Analogous (Adjacent)

#333a40

#333440

#393340

Triadic

#333440

#403334

#344033

Split complementary

#333440

#403933

#3b4033

Complete conversion table

HEX

#333440

RGB

rgb(51,52,64)

RGBA

rgba(51,52,64, 1)

HSL

hsl(235.38,11.3%,22.55%)

OKLCH (Modern CSS)

oklch(0.33 0.02 281.4)

CSS Variable

--color: #333440;

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

12.31

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.71

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#333440#393940

ORIG

SIM

Deuteranopia (green)

#333440#373740

ORIG

SIM

Tritanopia (blue)

#333440#332e34

ORIG

SIM

Monochrome (color blind)

#333440#353535

Mixing guide

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

MIXING PALETTE

92%

RYB PIGMENTS

Ivory black

Pigment

92%

Ultramarine blue

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)

3.5%

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.

Total Eclipse

#303543

Shuriken

#333344

Professor Plum

#393540

Haiti

#2C2A35

Armadillo

#403F33

Ship Gray

#393340

Outer Space

#333A40

Woody Brown

#403334

Lunar Green

#344033

Merlin

#403933

Mid Gray

#656674

Black Russian

#000012