What color is #B30103?

#B30103 is a dark, vivid red known as All Systems Red. It belongs to the red family of colors.

What is the RGB value of All Systems Red?

The RGB value is 179, 1, 3: 179 red, 1 green and 3 blue on a 0 to 255 scale.

What is the complementary color of All Systems Red?

The complementary color is #01B3B1, found by rotating the hue 180° on the color wheel.

Is black or white text better on #B30103?

White text. Black text has a contrast ratio of 2.92:1 and white text 7.19:1. WCAG asks for at least 4.5:1 for normal text.

All Systems Red color: hex code #B30103

#B30103 rgb(179, 1, 3)

Shades of red

All Systems Red has the hex code #B30103. It is a dark, vivid red.

In the RGB color model it is made of 70.2% red, 0.4% green and 1.2% blue (179, 1, 3).

Its hue angle is 359°, with 99% saturation and 35% lightness. For print, the CMYK equivalent is 0% cyan, 99% magenta, 98% yellow and 30% black.

White text is the more readable choice on this background (contrast 7.19:1).

All Systems Red (#B30103) color codes

HEX	`#B30103`
RGB	`rgb(179, 1, 3)`
RGB percent	`rgb(70.2%, 0.4%, 1.2%)`
HSL	`hsl(359, 99%, 35%)`
HSV / HSB	`hsv(359, 99%, 70%)`
CMYK	`cmyk(0%, 99%, 98%, 30%)`
CIE LAB	`lab(37.14, 61.33, 50.28)`
CIE LCH	`lch(37.14, 79.31, 39.35)`
CIE XYZ	`xyz(18.62, 9.615, 0.962)`
Decimal	`11731203`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with All Systems Red, 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 #B30103	Ratio	AA	AAA	AA large
Sample text	2.92:1	Fail	Fail	Fail
Sample text	7.19:1	Pass	Pass	Pass

#B30103 as text on	Ratio	AA	AAA	AA large
Sample text	7.19:1	Pass	Pass	Pass
Sample text	2.92:1	Fail	Fail	Fail

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 #B30103 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #b30103; }
.text { color: #b30103; }
.border { border: 2px solid #b30103; }
.transparent { background-color: rgb(179 1 3 / 50%); }
.gradient { background: linear-gradient(to right, #b30103, #b35801); }

Background

Text color

Border

Similar colors

Closest common color name: Firebrick.

See #B30103 on its hex code page

Questions

What color is #B30103?: #B30103 is a dark, vivid red known as All Systems Red. It belongs to the red family of colors.
What is the RGB value of All Systems Red?: The RGB value is 179, 1, 3: 179 red, 1 green and 3 blue on a 0 to 255 scale.
What is the complementary color of All Systems Red?: The complementary color is #01B3B1, found by rotating the hue 180° on the color wheel.
Is black or white text better on #B30103?: White text. Black text has a contrast ratio of 2.92:1 and white text 7.19:1. WCAG asks for at least 4.5:1 for normal text.