#12437F

#12437F

Color Values

HEX

#12437F

RGB

18, 67, 127

HSL

213.0, 75.2%, 28.4%

HSV

213.0, 85.8%, 49.8%

CMYK

85.8%, 47.2%, 0.0%, 50.2%

OKLCH

0.3864 0.1137 256.0

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#12437F

#7F4E12

Analogous

#12797F

#17127F

#12437F

Triadic

#12437F

#7F1243

#437F12

Split Complementary

#12437F

#7F1712

#797F12

Tetradic

#12437F

#7F1279

#7F4E12

#127F17

Color Blindness Simulation

Original

#12437F

Protanopia

#272870

Deuteranopia

#24216D

Tritanopia

#146562

Achromatopsia

#3D3D3D

CSS Usage

background-color: #12437F;
color: #12437F;
border-color: #12437F;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F2F7FC
100
#E2ECF9
200
#C0D9F6
300
#94BDF0
400
#5A9AE8
500
#2076DF
600
#195EB3
700
#144B8F
800
#103B70
900
#102D51
950
#0A1D33

Contrast Checker

Text on white

9.84:1

AA Pass AAA Pass

Text on black

2.14:1

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