#1D253A

#1D253A

Color Values

HEX

#1D253A

RGB

29, 37, 58

HSL

223.4, 33.3%, 17.1%

HSV

223.4, 50.0%, 22.7%

CMYK

50.0%, 36.2%, 0.0%, 77.3%

OKLCH

0.2675 0.0411 267.7

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#1D253A

#3A321D

Analogous

#1D343A

#241D3A

#1D253A

Triadic

#1D253A

#3A1D25

#253A1D

Split Complementary

#1D253A

#3A241D

#343A1D

Tetradic

#1D253A

#3A1D34

#3A321D

#1D3A24

Color Blindness Simulation

Original

#1D253A

Protanopia

#202135

Deuteranopia

#201F34

Tritanopia

#1D3130

Achromatopsia

#252525

CSS Usage

background-color: #1D253A;
color: #1D253A;
border-color: #1D253A;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F6FA
100
#E8EBF2
200
#CFD6E7
300
#ADB9D6
400
#8193C0
500
#556DAA
600
#445788
700
#36456D
800
#2B3655
900
#222A3F
950
#151B28

Contrast Checker

Text on white

15.24:1

AA Pass AAA Pass

Text on black

1.38:1

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