#1B2278

#1B2278

Color Values

HEX

#1B2278

RGB

27, 34, 120

HSL

235.5, 63.3%, 28.8%

HSV

235.5, 77.5%, 47.1%

CMYK

77.5%, 71.7%, 0.0%, 52.9%

OKLCH

0.3131 0.1437 271.3

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#1B2278

#78711B

Analogous

#1B5078

#421B78

#1B2278

Triadic

#1B2278

#781B22

#22781B

Split Complementary

#1B2278

#78421B

#50781B

Tetradic

#1B2278

#781B50

#78711B

#1B7842

Color Blindness Simulation

Original

#1B2278

Protanopia

#1E1E63

Deuteranopia

#1E1D5E

Tritanopia

#1B534F

Achromatopsia

#272727

CSS Usage

background-color: #1B2278;
color: #1B2278;
border-color: #1B2278;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F3F4FB
100
#E4E5F7
200
#C5C8F2
300
#9BA1E9
400
#656EDC
500
#2F3BD0
600
#252FA7
700
#1E2685
800
#171D68
900
#15194C
950
#0D1030

Contrast Checker

Text on white

13.58:1

AA Pass AAA Pass

Text on black

1.55:1

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