#0b1f2f

Firefly

Closest match (91% match)

Color formats

RGB

rgb(11, 31, 47)

Red, Green, Blue components

HSL

hsl(207, 62%, 11%)

Hue, Saturation, Lightness

CMYK

cmyk(77, 34, 0, 82)

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)

#0b1f2f

#2f1b0b

Analogous (Adjacent)

#0b2f2d

#0b1f2f

#0b0d2f

Triadic

#0b1f2f

#2f0b1f

#1f2f0b

Split complementary

#0b1f2f

#2f0b0d

#2f2d0b

Complete conversion table

HEX

#0B1F2F

RGB

rgb(11,31,47)

RGBA

rgba(11,31,47, 1)

HSL

hsl(206.67,62.07%,11.37%)

OKLCH (Modern CSS)

oklch(0.23 0.04 245.0)

CSS Variable

--color: #0b1f2f;

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

16.78

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.25

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#0b1f2f#26262f

ORIG

SIM

Deuteranopia (green)

#0b1f2f#18162f

ORIG

SIM

Tritanopia (blue)

#0b1f2f#0c1316

ORIG

SIM

Monochrome (color blind)

#0b1f2f#1d1d1d

Mixing guide

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

MIXING PALETTE

85%

13%

RYB PIGMENTS

Ivory black

Pigment

85%

Ultramarine blue

Pigment

13%

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)

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.

The Count’s Black

#102030

Midnight Dreams

#002233

Dark

#1B2431

Trapped Darkness

#0E1D32

Brown Tumbleweed

#2F1B0B

Haiti

#0B0D2F

Firefly

#0B2F2D

Aubergine

#2F0B1F

Deep Forest Green

#1F2F0B

Paco

#2F0B0D

Fiord

#3D4E61

Black

#000000