#1B1FBA

#1B1FBA

Color Values

HEX

#1B1FBA

RGB

27, 31, 186

HSL

238.5, 74.6%, 41.8%

HSV

238.5, 85.5%, 72.9%

CMYK

85.5%, 83.3%, 0.0%, 27.1%

OKLCH

0.3855 0.2275 268.2

Properties

Cool Dark Nearest: darkblue

Color Harmonies

Complementary

#1B1FBA

#BAB61B

Analogous

#1B6FBA

#671BBA

#1B1FBA

Triadic

#1B1FBA

#BA1B1F

#1FBA1B

Split Complementary

#1B1FBA

#BA671B

#6FBA1B

Tetradic

#1B1FBA

#BA1B6F

#BAB61B

#1BBA67

Color Blindness Simulation

Original

#1B1FBA

Protanopia

#1D1D95

Deuteranopia

#1C1C8C

Tritanopia

#1B7770

Achromatopsia

#292929

CSS Usage

background-color: #1B1FBA;
color: #1B1FBA;
border-color: #1B1FBA;
Nearest Tailwind: Indigo 700 #4338CA

Tailwind Shades

50
#F2F3FC
100
#E2E2F8
200
#C1C2F6
300
#9496EF
400
#5A5EE7
500
#2025DF
600
#1A1EB2
700
#15188E
800
#10136F
900
#101251
950
#0A0B33

Contrast Checker

Text on white

10.76:1

AA Pass AAA Pass

Text on black

1.95:1

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