#12387F

#12387F

Color Values

HEX

#12387F

RGB

18, 56, 127

HSL

219.1, 75.2%, 28.4%

HSV

219.1, 85.8%, 49.8%

CMYK

85.8%, 55.9%, 0.0%, 50.2%

OKLCH

0.3607 0.1279 261.5

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#12387F

#7F5912

Analogous

#126E7F

#22127F

#12387F

Triadic

#12387F

#7F1238

#387F12

Split Complementary

#12387F

#7F2212

#6E7F12

Tetradic

#12387F

#7F126E

#7F5912

#127F22

Color Blindness Simulation

Original

#12387F

Protanopia

#22236E

Deuteranopia

#201D6A

Tritanopia

#14605D

Achromatopsia

#353535

CSS Usage

background-color: #12387F;
color: #12387F;
border-color: #12387F;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F2F6FC
100
#E2EAF9
200
#C0D3F6
300
#94B4F0
400
#5A8BE8
500
#2062DF
600
#194FB3
700
#143F8F
800
#103170
900
#102751
950
#0A1833

Contrast Checker

Text on white

11.07:1

AA Pass AAA Pass

Text on black

1.9:1

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