#21474F

#21474F

Color Values

HEX

#21474F

RGB

33, 71, 79

HSL

190.4, 41.1%, 22.0%

HSV

190.4, 58.2%, 31.0%

CMYK

58.2%, 10.1%, 0.0%, 69.0%

OKLCH

0.3736 0.0452 213.1

Properties

Cool Dark Nearest: darkslategrey

Color Harmonies

Complementary

#21474F

#4F2921

Analogous

#214F40

#21304F

#21474F

Triadic

#21474F

#4F2147

#474F21

Split Complementary

#21474F

#4F2130

#4F4021

Tetradic

#21474F

#40214F

#4F2921

#304F21

Color Blindness Simulation

Original

#21474F

Protanopia

#31324D

Deuteranopia

#2F2C4D

Tritanopia

#234C4B

Achromatopsia

#3F3F3F

CSS Usage

background-color: #21474F;
color: #21474F;
border-color: #21474F;
Nearest Tailwind: Cyan 900 #164E63

Tailwind Shades

50
#F5F9FA
100
#E7F1F3
200
#CDE5EA
300
#A9D2DB
400
#7ABAC7
500
#4BA2B4
600
#3C8190
700
#306873
800
#26515A
900
#1F3C42
950
#13262A

Contrast Checker

Text on white

10.1:1

AA Pass AAA Pass

Text on black

2.08:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

ม.ค. 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

ม.ค. 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

ม.ค. 15, 2026