#1F1957

#1F1957

Color Values

HEX

#1F1957

RGB

31, 25, 87

HSL

245.8, 55.4%, 22.0%

HSV

245.8, 71.3%, 34.1%

CMYK

64.4%, 71.3%, 0.0%, 65.9%

OKLCH

0.2657 0.1072 280.6

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#1F1957

#515719

Analogous

#193257

#3E1957

#1F1957

Triadic

#1F1957

#571F19

#19571F

Split Complementary

#1F1957

#573E19

#325719

Tetradic

#1F1957

#571932

#515719

#19573E

Color Blindness Simulation

Original

#1F1957

Protanopia

#1C1C48

Deuteranopia

#1D1D44

Tritanopia

#1F3C3A

Achromatopsia

#1F1F1F

CSS Usage

background-color: #1F1957;
color: #1F1957;
border-color: #1F1957;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E6E5F6
200
#CBC8EF
300
#A6A0E4
400
#766CD5
500
#4739C6
600
#382D9F
700
#2D247F
800
#231C63
900
#1D1849
950
#120F2E

Contrast Checker

Text on white

15.73:1

AA Pass AAA Pass

Text on black

1.33:1

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