#1B403F

#1B403F

Color Values

HEX

#1B403F

RGB

27, 64, 63

HSL

178.4, 40.7%, 17.8%

HSV

178.4, 57.8%, 25.1%

CMYK

57.8%, 0.0%, 1.6%, 74.9%

OKLCH

0.3442 0.0423 193.0

Properties

Cool Dark Nearest: RAL 6036 Pearl Opal Green

Color Harmonies

Complementary

#1B403F

#401B1C

Analogous

#1B402C

#1B2E40

#1B403F

Triadic

#1B403F

#3F1B40

#403F1B

Split Complementary

#1B403F

#401B2E

#402C1B

Tetradic

#1B403F

#2C1B40

#401B1C

#2E401B

Color Blindness Simulation

Original

#1B403F

Protanopia

#2B2B3F

Deuteranopia

#29263F

Tritanopia

#1D3F3F

Achromatopsia

#383838

CSS Usage

background-color: #1B403F;
color: #1B403F;
border-color: #1B403F;
Nearest Tailwind: Teal 950 #042F2E

Tailwind Shades

50
#F5FAFA
100
#E7F3F3
200
#CDEAE9
300
#A9DBD9
400
#7AC7C5
500
#4CB3B1
600
#3C908D
700
#307371
800
#265A58
900
#1F4241
950
#132A29

Contrast Checker

Text on white

11.34:1

AA Pass AAA Pass

Text on black

1.85:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026