#010029

#010029

Color Values

HEX

#010029

RGB

1, 0, 41

HSL

241,5, 100,0%, 8,0%

HSV

241,5, 100,0%, 16,1%

CMYK

97,6%, 100,0%, 0,0%, 83,9%

OKLCH

0,1287 0,0867 266,9

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#010029

#282900

Analogous

#001329

#150029

#010029

Triadic

#010029

#290100

#002901

Split Complementary

#010029

#291500

#132900

Tetradic

#010029

#290013

#282900

#002915

Color Blindness Simulation

Original

#010029

Protanopia

#01011F

Deuteranopia

#01011D

Tritanopia

#011716

Achromatopsia

#030303

CSS Usage

background-color: #010029;
color: #010029;
border-color: #010029;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F1F1FE
100
#DFDEFC
200
#B9B8FF
300
#8885FF
400
#4742FF
500
#0600FF
600
#0500CC
700
#0400A3
800
#030080
900
#07055C
950
#04033A

Contrast Checker

Text on white

20,32:1

AA Pass AAA Pass

Text on black

1,03:1

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