#100340

#100340

Color Values

HEX

#100340

RGB

16, 3, 64

HSL

252.8, 91.0%, 13.1%

HSV

252.8, 95.3%, 25.1%

CMYK

75.0%, 95.3%, 0.0%, 74.9%

OKLCH

0.1887 0.1053 280.5

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#100340

#334003

Analogous

#031440

#2E0340

#100340

Triadic

#100340

#401003

#034010

Split Complementary

#100340

#402E03

#144003

Tetradic

#100340

#400314

#334003

#03402E

Color Blindness Simulation

Original

#100340

Protanopia

#0A0A31

Deuteranopia

#0B0C2E

Tritanopia

#0F2623

Achromatopsia

#0A0A0A

CSS Usage

background-color: #100340;
color: #100340;
border-color: #100340;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F1FD
100
#E5DFFB
200
#C9BBFC
300
#A28AF9
400
#6F4BF7
500
#3D0BF4
600
#3109C3
700
#27079C
800
#1E067A
900
#1A0958
950
#100638

Contrast Checker

Text on white

18.93:1

AA Pass AAA Pass

Text on black

1.11:1

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