#1B2D4B

#1B2D4B

Color Values

HEX

#1B2D4B

RGB

27, 45, 75

HSL

217.5, 47.1%, 20.0%

HSV

217.5, 64.0%, 29.4%

CMYK

64.0%, 40.0%, 0.0%, 70.6%

OKLCH

0.2979 0.0598 260.1

Properties

Cool Dark Nearest: RAL 5010 Gentian Blue

Color Harmonies

Complementary

#1B2D4B

#4B391B

Analogous

#1B454B

#211B4B

#1B2D4B

Triadic

#1B2D4B

#4B1B2D

#2D4B1B

Split Complementary

#1B2D4B

#4B211B

#454B1B

Tetradic

#1B2D4B

#4B1B45

#4B391B

#1B4B21

Color Blindness Simulation

Original

#1B2D4B

Protanopia

#232344

Deuteranopia

#222042

Tritanopia

#1C3E3D

Achromatopsia

#2B2B2B

CSS Usage

background-color: #1B2D4B;
color: #1B2D4B;
border-color: #1B2D4B;
Nearest Tailwind: Sky 950 #082F49

Tailwind Shades

50
#F4F7FA
100
#E6EBF4
200
#CAD7EC
300
#A5BBDF
400
#7496CD
500
#4370BC
600
#365A96
700
#2B4878
800
#22385E
900
#1C2B45
950
#121B2C

Contrast Checker

Text on white

13.78:1

AA Pass AAA Pass

Text on black

1.52:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026