#2578BE

#2578BE

Color Values

HEX

#2578BE

RGB

37, 120, 190

HSL

207.5, 67.4%, 44.5%

HSV

207.5, 80.5%, 74.5%

CMYK

80.5%, 36.8%, 0.0%, 25.5%

OKLCH

0.5589 0.1334 248.6

Properties

Cool Dark Nearest: RAL 5015 Sky Blue

Color Harmonies

Complementary

#2578BE

#BE6B25

Analogous

#25BEB8

#252BBE

#2578BE

Triadic

#2578BE

#BE2578

#78BE25

Split Complementary

#2578BE

#BE252B

#BEB825

Tetradic

#2578BE

#B825BE

#BE6B25

#2BBE25

Color Blindness Simulation

Original

#2578BE

Protanopia

#494AAD

Deuteranopia

#443EA9

Tritanopia

#29A09D

Achromatopsia

#6B6B6B

CSS Usage

background-color: #2578BE;
color: #2578BE;
border-color: #2578BE;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F8FC
100
#E3EEF7
200
#C3DDF3
300
#99C5EB
400
#61A6E0
500
#2A87D5
600
#216CAB
700
#1B5689
800
#15436B
900
#13334E
950
#0C2031

Contrast Checker

Text on white

4.66:1

AA Pass AAA Fail

Text on black

4.51:1

AA Pass 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