#1c1e21

Satin Deep Black

ReadyTools Database (Exact)

Shark

~97% match

Color formats

RGB

rgb(28, 30, 33)

Red, Green, Blue components

HSL

hsl(216, 8%, 12%)

Hue, Saturation, Lightness

CMYK

cmyk(15, 9, 0, 87)

Print color encoding

Luminance

0.013

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#1c1e21

#211f1c

Analogous (Adjacent)

#1c2121

#1c1e21

#1c1c21

Triadic

#1c1e21

#211c1e

#1e211c

Split complementary

#1c1e21

#211c1c

#21211c

Complete conversion table

HEX

#1C1E21

RGB

rgb(28,30,33)

RGBA

rgba(28,30,33, 1)

HSL

hsl(216,8.2%,11.96%)

OKLCH (Modern CSS)

oklch(0.23 0.01 258.4)

CSS Variable

--color: #1c1e21;

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

16.71

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.26

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#1c1e21#1f1f21

ORIG

SIM

Deuteranopia (green)

#1c1e21#1e1e21

ORIG

SIM

Tritanopia (blue)

#1c1e21#1c1a1d

ORIG

SIM

Monochrome (color blind)

#1c1e21#1e1e1e

Mixing guide

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

MIXING PALETTE

97%

RYB PIGMENTS

Ivory black

Pigment

97%

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)

1.3%

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.

Noble Black

#202124

Inkwell Inception

#1E1E21

Lead

#212121

Piano Black

#17171A

Dune

#211F1C

Shark

#1C1C21

Shark

#1C2121

Thunder

#211C1E

Heavy Metal

#1E211C

Cod Gray

#211D1C

Abbey

#4B4D51

Black

#000000