#010123

#010123

Color Values

HEX

#010123

RGB

1, 1, 35

HSL

240.0, 94.4%, 7.1%

HSV

240.0, 97.1%, 13.7%

CMYK

97.1%, 97.1%, 0.0%, 86.3%

OKLCH

0.1224 0.0757 267.6

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#010123

#232301

Analogous

#011223

#120123

#010123

Triadic

#010123

#230101

#012301

Split Complementary

#010123

#231201

#122301

Tetradic

#010123

#230112

#232301

#012312

Color Blindness Simulation

Original

#010123

Protanopia

#01011B

Deuteranopia

#010119

Tritanopia

#011413

Achromatopsia

#030303

CSS Usage

background-color: #010123;
color: #010123;
border-color: #010123;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F1F1FD
100
#DFDFFB
200
#BABAFD
300
#8888FC
400
#4848FA
500
#0707F8
600
#0606C6
700
#05059F
800
#04047C
900
#07075A
950
#050539

Contrast Checker

Text on white

20.39:1

AA Pass AAA Pass

Text on black

1.03:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026