#40AC51

#40AC51

Color Values

HEX

#40AC51

RGB

64, 172, 81

HSL

129.4, 45.8%, 46.3%

HSV

129.4, 62.8%, 67.5%

CMYK

62.8%, 0.0%, 52.9%, 32.5%

OKLCH

0.6613 0.1628 146.3

Properties

Cool Light Nearest: NCS S 1060-G Bright Green

Color Harmonies

Complementary

#40AC51

#AC409B

Analogous

#65AC40

#40AC87

#40AC51

Triadic

#40AC51

#5140AC

#AC5140

Split Complementary

#40AC51

#8740AC

#AC4065

Tetradic

#40AC51

#4065AC

#AC409B

#AC8740

Color Blindness Simulation

Original

#40AC51

Protanopia

#6F7067

Deuteranopia

#68606C

Tritanopia

#45787C

Achromatopsia

#8E8E8E

CSS Usage

background-color: #40AC51;
color: #40AC51;
border-color: #40AC51;
Nearest Tailwind: Green 600 #16A34A

Tailwind Shades

50
#F4FAF5
100
#E6F4E8
200
#CBECD0
300
#A6DEAF
400
#75CC83
500
#45BA57
600
#379546
700
#2C7738
800
#235D2C
900
#1C4423
950
#122B16

Contrast Checker

Text on white

2.9:1

AA Fail AAA Fail

Text on black

7.24:1

AA Pass AAA Pass

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026