#312B3F

#312B3F

Color Values

HEX

#312B3F

RGB

49, 43, 63

HSL

258.0, 18.9%, 20.8%

HSV

258.0, 31.7%, 24.7%

CMYK

22.2%, 31.7%, 0.0%, 75.3%

OKLCH

0.3045 0.0363 298.0

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#312B3F

#393F2B

Analogous

#2B2F3F

#3B2B3F

#312B3F

Triadic

#312B3F

#3F312B

#2B3F31

Split Complementary

#312B3F

#3F3B2B

#2F3F2B

Tetradic

#312B3F

#3F2B2F

#393F2B

#2B3F3B

Color Blindness Simulation

Original

#312B3F

Protanopia

#2E2E3A

Deuteranopia

#2F2F39

Tritanopia

#313636

Achromatopsia

#2E2E2E

CSS Usage

background-color: #312B3F;
color: #312B3F;
border-color: #312B3F;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F7F6F9
100
#ECEAF0
200
#D9D5E2
300
#BDB6CD
400
#9A8FB2
500
#766798
600
#5E5379
700
#4B4261
800
#3B344C
900
#2D2839
950
#1D1924

Contrast Checker

Text on white

13.57:1

AA Pass AAA Pass

Text on black

1.55:1

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