#307e8a

Calypso

Closest match (92% match)

Color formats

RGB

rgb(48, 126, 138)

Red, Green, Blue components

HSL

hsl(188, 48%, 36%)

Hue, Saturation, Lightness

CMYK

cmyk(65, 9, 0, 46)

Print color encoding

Luminance

0.174

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#307e8a

#8a3c30

Analogous (Adjacent)

#308a69

#307e8a

#30518a

Triadic

#307e8a

#8a307e

#7e8a30

Split complementary

#307e8a

#8a3051

#8a6930

Complete conversion table

HEX

#307E8A

RGB

rgb(48,126,138)

RGBA

rgba(48,126,138, 1)

HSL

hsl(188,48.39%,36.47%)

OKLCH (Modern CSS)

oklch(0.55 0.08 209.2)

CSS Variable

--color: #307e8a;

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

4.69

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

4.48

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#307e8a#83838a

ORIG

SIM

Deuteranopia (green)

#307e8a#514b8a

ORIG

SIM

Tritanopia (blue)

#307e8a#345059

ORIG

SIM

Monochrome (color blind)

#307e8a#747474

Mixing guide

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

MIXING PALETTE

44%

43%

12%

RYB PIGMENTS

Ultramarine blue

Pigment

44%

Ivory black

Pigment

43%

Cadmium yellow

Pigment

12%

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)

17.4%

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.

Bermuda

#1B7D8D

Panorama

#327A88

Mysterious Blue

#3E7A85

Diver’s Eden

#3A797E

El Salva

#8A3C30

Chambray

#30518A

Sea Green

#308A69

Plum

#8A307E

Crete

#7E8A30

Camelot

#8A3051

Fountain Blue

#6DB7C4

Sherpa Blue

#004954