#1D3759

#1D3759

Color Values

HEX

#1D3759

RGB

29, 55, 89

HSL

214.0, 50.8%, 23.1%

HSV

214.0, 67.4%, 34.9%

CMYK

67.4%, 38.2%, 0.0%, 65.1%

OKLCH

0.3341 0.0685 255.8

Properties

Cool Dark Nearest: RAL 5010 Gentian Blue

Color Harmonies

Complementary

#1D3759

#593F1D

Analogous

#1D5559

#211D59

#1D3759

Triadic

#1D3759

#591D37

#37591D

Split Complementary

#1D3759

#59211D

#55591D

Tetradic

#1D3759

#591D55

#593F1D

#1D5921

Color Blindness Simulation

Original

#1D3759

Protanopia

#282851

Deuteranopia

#27254F

Tritanopia

#1E4A49

Achromatopsia

#343434

CSS Usage

background-color: #1D3759;
color: #1D3759;
border-color: #1D3759;
Nearest Tailwind: Sky 950 #082F49

Tailwind Shades

50
#F4F7FB
100
#E5ECF5
200
#C9D9ED
300
#A3BEE1
400
#719AD1
500
#3F77C0
600
#325F9A
700
#284C7B
800
#1F3B60
900
#1A2D47
950
#111D2D

Contrast Checker

Text on white

12.05:1

AA Pass AAA Pass

Text on black

1.74:1

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