#281D40

#281D40

Color Values

HEX

#281D40

RGB

40, 29, 64

HSL

258.9, 37.6%, 18.2%

HSV

258.9, 54.7%, 25.1%

CMYK

37.5%, 54.7%, 0.0%, 74.9%

OKLCH

0.2632 0.0643 296.2

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#281D40

#35401D

Analogous

#1D2340

#391D40

#281D40

Triadic

#281D40

#40281D

#1D4028

Split Complementary

#281D40

#40391D

#23401D

Tetradic

#281D40

#401D23

#35401D

#1D4039

Color Blindness Simulation

Original

#281D40

Protanopia

#232338

Deuteranopia

#242536

Tritanopia

#27312F

Achromatopsia

#222222

CSS Usage

background-color: #281D40;
color: #281D40;
border-color: #281D40;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F5FA
100
#EBE7F3
200
#D6CEE9
300
#B9ABD9
400
#947DC4
500
#6E50AF
600
#58408C
700
#463370
800
#372858
900
#2A2041
950
#1B1429

Contrast Checker

Text on white

15.67:1

AA Pass AAA Pass

Text on black

1.34:1

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