#1B0340

#1B0340

Color Values

HEX

#1B0340

RGB

27, 3, 64

HSL

263.6, 91.0%, 13.1%

HSV

263.6, 95.3%, 25.1%

CMYK

57.8%, 95.3%, 0.0%, 74.9%

OKLCH

0.2018 0.1043 292.7

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#1B0340

#284003

Analogous

#030940

#390340

#1B0340

Triadic

#1B0340

#401B03

#03401B

Split Complementary

#1B0340

#403903

#094003

Tetradic

#1B0340

#400309

#284003

#034039

Color Blindness Simulation

Original

#1B0340

Protanopia

#111031

Deuteranopia

#12142E

Tritanopia

#1A2623

Achromatopsia

#0D0D0D

CSS Usage

background-color: #1B0340;
color: #1B0340;
border-color: #1B0340;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F1FD
100
#EADFFB
200
#D4BBFC
300
#B68AF9
400
#8E4BF7
500
#670BF4
600
#5209C3
700
#42079C
800
#33067A
900
#280958
950
#190638

Contrast Checker

Text on white

18.52:1

AA Pass AAA Pass

Text on black

1.13:1

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