#0F0B2B

#0F0B2B

Color Values

HEX

#0F0B2B

RGB

15, 11, 43

HSL

247.5, 59.3%, 10.6%

HSV

247.5, 74.4%, 16.9%

CMYK

65.1%, 74.4%, 0.0%, 83.1%

OKLCH

0.1782 0.0623 283.8

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#0F0B2B

#272B0B

Analogous

#0B172B

#1F0B2B

#0F0B2B

Triadic

#0F0B2B

#2B0F0B

#0B2B0F

Split Complementary

#0F0B2B

#2B1F0B

#172B0B

Tetradic

#0F0B2B

#2B0B17

#272B0B

#0B2B1F

Color Blindness Simulation

Original

#0F0B2B

Protanopia

#0D0D23

Deuteranopia

#0E0E21

Tritanopia

#0F1D1C

Achromatopsia

#0E0E0E

CSS Usage

background-color: #0F0B2B;
color: #0F0B2B;
border-color: #0F0B2B;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F3FB
100
#E6E4F6
200
#CBC6F0
300
#A79EE6
400
#7769D9
500
#4734CB
600
#392AA2
700
#2D2182
800
#231A66
900
#1D174A
950
#120E2F

Contrast Checker

Text on white

19.04:1

AA Pass AAA Pass

Text on black

1.1:1

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