#bb3a1d

Thunderbird

Closest match (98% match)

Color formats

RGB

rgb(187, 58, 29)

Red, Green, Blue components

HSL

hsl(11, 73%, 42%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 69, 84, 27)

Print color encoding

Luminance

0.137

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#bb3a1d

#1d9ebb

Analogous (Adjacent)

#bb1d4f

#bb3a1d

#bb891d

Triadic

#bb3a1d

#1dbb3a

#3a1dbb

Split complementary

#bb3a1d

#1dbb89

#1d4fbb

Complete conversion table

HEX

#BB3A1D

RGB

rgb(187,58,29)

RGBA

rgba(187,58,29, 1)

HSL

hsl(11.01,73.15%,42.35%)

OKLCH (Modern CSS)

oklch(0.53 0.17 33.9)

CSS Variable

--color: #bb3a1d;

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

5.62

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

3.74

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#bb3a1d#2d2d1d

ORIG

SIM

Deuteranopia (green)

#bb3a1d#7f8c1d

ORIG

SIM

Tritanopia (blue)

#bb3a1d#b56c77

ORIG

SIM

Monochrome (color blind)

#bb3a1d#7e6159

Mixing guide

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

MIXING PALETTE

65%

20%

15%

RYB PIGMENTS

Cadmium red

Pigment

65%

Ivory black

Pigment

20%

Cadmium yellow

Pigment

15%

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

Red hue

620–750 nm • closest visible-spectrum range

750 nm

380 nm

Visual temperature

Warm

A perceptual warm–cool classification. Kelvin does not apply to an arbitrary interface color.

Cool

Neutral

Warm

Luminance (brightness)

13.7%

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.

Once Bitten

#BD2F10

Bricky Brick

#B33A22

Paprika Kisses

#C24325

Crimson Blaze

#AD3D1E

Eastern Blue

#1D9EBB

Nugget

#BB891D

Maroon Flush

#BB1D4F

Malachite

#1DBB3A

Persian Blue

#3A1DBB

Mountain Meadow

#1DBB89

Coral

#FF7550

Maroon

#790000