#1B1FBC

#1B1FBC

Color Values

HEX

#1B1FBC

RGB

27, 31, 188

HSL

238.5, 74.9%, 42.2%

HSV

238.5, 85.6%, 73.7%

CMYK

85.6%, 83.5%, 0.0%, 26.3%

OKLCH

0.388 0.2297 268.1

Properties

Cool Dark Nearest: darkblue

Color Harmonies

Complementary

#1B1FBC

#BCB81B

Analogous

#1B70BC

#681BBC

#1B1FBC

Triadic

#1B1FBC

#BC1B1F

#1FBC1B

Split Complementary

#1B1FBC

#BC681B

#70BC1B

Tetradic

#1B1FBC

#BC1B70

#BCB81B

#1BBC68

Color Blindness Simulation

Original

#1B1FBC

Protanopia

#1D1D96

Deuteranopia

#1C1C8D

Tritanopia

#1B7871

Achromatopsia

#292929

CSS Usage

background-color: #1B1FBC;
color: #1B1FBC;
border-color: #1B1FBC;
Nearest Tailwind: Indigo 700 #4338CA

Tailwind Shades

50
#F2F3FC
100
#E2E2F9
200
#C1C2F6
300
#9496F0
400
#5A5EE7
500
#2025DF
600
#1A1DB2
700
#14188F
800
#10126F
900
#101151
950
#0A0B33

Contrast Checker

Text on white

10.67:1

AA Pass AAA Pass

Text on black

1.97:1

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