#1D66BC

#1D66BC

Color Values

HEX

#1D66BC

RGB

29, 102, 188

HSL

212.5, 73.3%, 42.5%

HSV

212.5, 84.6%, 73.7%

CMYK

84.6%, 45.7%, 0.0%, 26.3%

OKLCH

0.5144 0.1523 255.6

Properties

Cool Dark Nearest: Denim

Color Harmonies

Complementary

#1D66BC

#BC731D

Analogous

#1DB5BC

#241DBC

#1D66BC

Triadic

#1D66BC

#BC1D66

#66BC1D

Split Complementary

#1D66BC

#BC241D

#B5BC1D

Tetradic

#1D66BC

#BC1DB5

#BC731D

#1DBC24

Color Blindness Simulation

Original

#1D66BC

Protanopia

#3D3DA7

Deuteranopia

#3833A2

Tritanopia

#219793

Achromatopsia

#5D5D5D

CSS Usage

background-color: #1D66BC;
color: #1D66BC;
border-color: #1D66BC;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F3F7FC
100
#E2ECF8
200
#C1D9F5
300
#95BEEF
400
#5B9BE6
500
#2278DD
600
#1B60B1
700
#164D8D
800
#113C6E
900
#102E50
950
#0A1D33

Contrast Checker

Text on white

5.71:1

AA Pass AAA Fail

Text on black

3.68:1

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