What color is #1F51FF?

#1F51FF is a vivid blue known as Neon Blue. It belongs to the blue family of colors.

What is the RGB value of Neon Blue?

The RGB value is 31, 81, 255: 31 red, 81 green and 255 blue on a 0 to 255 scale.

What is the complementary color of Neon Blue?

The complementary color is #FFCD1F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1F51FF?

White text. Black text has a contrast ratio of 3.68:1 and white text 5.71:1. WCAG asks for at least 4.5:1 for normal text.

Neon Blue color: hex code #1F51FF

#1F51FF rgb(31, 81, 255)

Shades of blue

Neon Blue has the hex code #1F51FF. It is a vivid blue.

In the RGB color model it is made of 12.2% red, 31.8% green and 100% blue (31, 81, 255).

Its hue angle is 227°, with 100% saturation and 56% lightness. For print, the CMYK equivalent is 88% cyan, 68% magenta, 0% yellow and 0% black.

White text is the more readable choice on this background (contrast 5.71:1).

Neon Blue (#1F51FF) color codes

HEX	`#1F51FF`
RGB	`rgb(31, 81, 255)`
RGB percent	`rgb(12.2%, 31.8%, 100%)`
HSL	`hsl(227, 100%, 56%)`
HSV / HSB	`hsv(227, 88%, 100%)`
CMYK	`cmyk(88%, 68%, 0%, 0%)`
CIE LAB	`lab(43.35, 49.07, -89.48)`
CIE LCH	`lch(43.35, 102.05, 298.74)`
CIE XYZ	`xyz(21.551, 13.393, 96.038)`
Decimal	`2052607`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with Neon Blue, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #1F51FF	Ratio	AA	AAA	AA large
Sample text	3.68:1	Fail	Fail	Pass
Sample text	5.71:1	Pass	Fail	Pass

#1F51FF as text on	Ratio	AA	AAA	AA large
Sample text	5.71:1	Pass	Fail	Pass
Sample text	3.68:1	Fail	Fail	Pass

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #1F51FF looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1f51ff; }
.text { color: #1f51ff; }
.border { border: 2px solid #1f51ff; }
.transparent { background-color: rgb(31 81 255 / 50%); }
.gradient { background: linear-gradient(to right, #1f51ff, #5d1fff); }

Background

Text color

Border

Similar colors

See #1F51FF on its hex code page

Questions

What color is #1F51FF?: #1F51FF is a vivid blue known as Neon Blue. It belongs to the blue family of colors.
What is the RGB value of Neon Blue?: The RGB value is 31, 81, 255: 31 red, 81 green and 255 blue on a 0 to 255 scale.
What is the complementary color of Neon Blue?: The complementary color is #FFCD1F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1F51FF?: White text. Black text has a contrast ratio of 3.68:1 and white text 5.71:1. WCAG asks for at least 4.5:1 for normal text.