#0F1738

#0F1738

Color Values

HEX

#0F1738

RGB

15, 23, 56

HSL

228.3, 57.7%, 13.9%

HSV

228.3, 73.2%, 22.0%

CMYK

73.2%, 58.9%, 0.0%, 78.0%

OKLCH

0.2189 0.0649 270.0

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#0F1738

#38300F

Analogous

#0F2B38

#1B0F38

#0F1738

Triadic

#0F1738

#380F17

#17380F

Split Complementary

#0F1738

#381B0F

#2B380F

Tetradic

#0F1738

#380F2B

#38300F

#0F381B

Color Blindness Simulation

Original

#0F1738

Protanopia

#121330

Deuteranopia

#12112E

Tritanopia

#0F2A28

Achromatopsia

#181818

CSS Usage

background-color: #0F1738;
color: #0F1738;
border-color: #0F1738;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F5FB
100
#E4E8F6
200
#C7CFF0
300
#9EACE5
400
#6A7FD7
500
#3653C9
600
#2B42A1
700
#233581
800
#1B2965
900
#17214A
950
#0F152E

Contrast Checker

Text on white

17.5:1

AA Pass AAA Pass

Text on black

1.2:1

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