#21575d

Blue Dianne

Closest match (94% match)

Color formats

RGB

rgb(33, 87, 93)

Red, Green, Blue components

HSL

hsl(186, 48%, 25%)

Hue, Saturation, Lightness

CMYK

cmyk(65, 6, 0, 64)

Print color encoding

Luminance

0.079

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#21575d

#5d2721

Analogous (Adjacent)

#215d45

#21575d

#21395d

Triadic

#21575d

#5d2157

#575d21

Split complementary

#21575d

#5d2139

#5d4521

Complete conversion table

HEX

#21575D

RGB

rgb(33,87,93)

RGBA

rgba(33,87,93, 1)

HSL

hsl(186,47.62%,24.71%)

OKLCH (Modern CSS)

oklch(0.42 0.06 205.3)

CSS Variable

--color: #21575d;

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

8.12

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.59

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#21575d#5a5a5d

ORIG

SIM

Deuteranopia (green)

#21575d#37335d

ORIG

SIM

Tritanopia (blue)

#21575d#24373e

ORIG

SIM

Monochrome (color blind)

#21575d#505050

Mixing guide

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

MIXING PALETTE

68%

25%

RYB PIGMENTS

Ivory black

Pigment

68%

Ultramarine blue

Pigment

25%

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

Cyan hue

485–500 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)

7.9%

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.

Deep Sea Diver

#255C61

Abyssal Waters

#005765

Beau Vert

#0C6064

Pacific

#24646B

Cocoa Bean

#5D2721

Cello

#21395D

Green Pea

#215D45

Tawny Port

#5D2157

Fern Frond

#575D21

Wine Berry

#5D2139

Smalt Blue

#598D93

Daintree

#00262C