#282B4B

#282B4B

Color Values

HEX

#282B4B

RGB

40, 43, 75

HSL

234.9, 30.4%, 22.5%

HSV

234.9, 46.7%, 29.4%

CMYK

46.7%, 42.7%, 0.0%, 70.6%

OKLCH

0.3027 0.0577 278.3

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#282B4B

#4B4828

Analogous

#283C4B

#36284B

#282B4B

Triadic

#282B4B

#4B282B

#2B4B28

Split Complementary

#282B4B

#4B3628

#3C4B28

Tetradic

#282B4B

#4B283C

#4B4828

#284B36

Color Blindness Simulation

Original

#282B4B

Protanopia

#292943

Deuteranopia

#292941

Tritanopia

#283D3C

Achromatopsia

#2D2D2D

CSS Usage

background-color: #282B4B;
color: #282B4B;
border-color: #282B4B;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F6F9
100
#E9E9F2
200
#D0D2E6
300
#AFB2D4
400
#8489BD
500
#595FA6
600
#474C85
700
#393D6A
800
#2C3053
900
#23253E
950
#161827

Contrast Checker

Text on white

13.66:1

AA Pass AAA Pass

Text on black

1.54:1

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