#040C1F

#040C1F

Color Values

HEX

#040C1F

RGB

4, 12, 31

HSL

222.2, 77.1%, 6.9%

HSV

222.2, 87.1%, 12.2%

CMYK

87.1%, 61.3%, 0.0%, 87.8%

OKLCH

0.1584 0.0429 262.4

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#040C1F

#1F1704

Analogous

#041A1F

#0A041F

#040C1F

Triadic

#040C1F

#1F040C

#0C1F04

Split Complementary

#040C1F

#1F0A04

#1A1F04

Tetradic

#040C1F

#1F041A

#1F1704

#041F0A

Color Blindness Simulation

Original

#040C1F

Protanopia

#07081A

Deuteranopia

#070619

Tritanopia

#041716

Achromatopsia

#0C0C0C

CSS Usage

background-color: #040C1F;
color: #040C1F;
border-color: #040C1F;
Nearest Tailwind: Slate 950 #020617

Tailwind Shades

50
#F2F5FC
100
#E1E8F9
200
#C0D0F7
300
#93AFF1
400
#5883E9
500
#1D58E2
600
#1746B5
700
#133891
800
#0F2C71
900
#0F2352
950
#091634

Contrast Checker

Text on white

19.49:1

AA Pass AAA Pass

Text on black

1.08:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026