#1F0B3B

#1F0B3B

Color Values

HEX

#1F0B3B

RGB

31, 11, 59

HSL

265.0, 68.6%, 13.7%

HSV

265.0, 81.4%, 23.1%

CMYK

47.5%, 81.4%, 0.0%, 76.9%

OKLCH

0.2139 0.0868 297.6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1F0B3B

#273B0B

Analogous

#0B0F3B

#370B3B

#1F0B3B

Triadic

#1F0B3B

#3B1F0B

#0B3B1F

Split Complementary

#1F0B3B

#3B370B

#0F3B0B

Tetradic

#1F0B3B

#3B0B0F

#273B0B

#0B3B37

Color Blindness Simulation

Original

#1F0B3B

Protanopia

#16162F

Deuteranopia

#18192D

Tritanopia

#1E2624

Achromatopsia

#131313

CSS Usage

background-color: #1F0B3B;
color: #1F0B3B;
border-color: #1F0B3B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F3FC
100
#EBE3F8
200
#D7C3F4
300
#BB98EC
400
#9660E1
500
#7128D7
600
#5A20AC
700
#481A8A
800
#38146B
900
#2B134E
950
#1B0C31

Contrast Checker

Text on white

17.96:1

AA Pass AAA Pass

Text on black

1.17:1

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