#283C7F

#283C7F

Color Values

HEX

#283C7F

RGB

40, 60, 127

HSL

226.2, 52.1%, 32.7%

HSV

226.2, 68.5%, 49.8%

CMYK

68.5%, 52.8%, 0.0%, 50.2%

OKLCH

0.3794 0.1159 268.0

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#283C7F

#7F6B28

Analogous

#28677F

#3F287F

#283C7F

Triadic

#283C7F

#7F283C

#3C7F28

Split Complementary

#283C7F

#7F3F28

#677F28

Tetradic

#283C7F

#7F2867

#7F6B28

#287F3F

Color Blindness Simulation

Original

#283C7F

Protanopia

#31316F

Deuteranopia

#302E6B

Tritanopia

#29625F

Achromatopsia

#3D3D3D

CSS Usage

background-color: #283C7F;
color: #283C7F;
border-color: #283C7F;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F6FB
100
#E5E9F5
200
#C9D1EE
300
#A2B1E2
400
#6F86D2
500
#3D5CC2
600
#31499B
700
#273B7C
800
#1F2E61
900
#1A2447
950
#10172D

Contrast Checker

Text on white

10.28:1

AA Pass AAA Pass

Text on black

2.04:1

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