#151D34

#151D34

Color Values

HEX

#151D34

RGB

21, 29, 52

HSL

224.5, 42.5%, 14.3%

HSV

224.5, 59.6%, 20.4%

CMYK

59.6%, 44.2%, 0.0%, 79.6%

OKLCH

0.2358 0.046 268.2

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#151D34

#342C15

Analogous

#152C34

#1C1534

#151D34

Triadic

#151D34

#34151D

#1D3415

Split Complementary

#151D34

#341C15

#2C3415

Tetradic

#151D34

#34152C

#342C15

#15341C

Color Blindness Simulation

Original

#151D34

Protanopia

#18192E

Deuteranopia

#18172D

Tritanopia

#152A29

Achromatopsia

#1D1D1D

CSS Usage

background-color: #151D34;
color: #151D34;
border-color: #151D34;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F6FA
100
#E7EAF4
200
#CCD4EA
300
#A8B5DC
400
#798DC9
500
#4965B6
600
#3B5191
700
#2F4174
800
#25335B
900
#1E2743
950
#13192A

Contrast Checker

Text on white

16.7:1

AA Pass AAA Pass

Text on black

1.26:1

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