Siren Scarlet color: hex code #B21D1D
Siren Scarlet has the hex code #B21D1D. It is a moderate red.
In the RGB color model it is made of 69.8% red, 11.4% green and 11.4% blue (178, 29, 29).
Its hue angle is 0°, with 72% saturation and 41% lightness. For print, the CMYK equivalent is 0% cyan, 84% magenta, 84% yellow and 30% black.
White text is the more readable choice on this background (contrast 6.8:1).
Siren Scarlet (#B21D1D) color codes
| HEX | #B21D1D | |
|---|---|---|
| RGB | rgb(178, 29, 29) | |
| RGB percent | rgb(69.8%, 11.4%, 11.4%) | |
| HSL | hsl(0, 72%, 41%) | |
| HSV / HSB | hsv(0, 84%, 70%) | |
| CMYK | cmyk(0%, 84%, 84%, 30%) | |
| CIE LAB | lab(38.61, 57.07, 39.9) | |
| CIE LCH | lch(38.61, 69.64, 34.95) | |
| CIE XYZ | xyz(19.024, 10.436, 2.175) | |
| Decimal | 11672861 | |
| Short hex | None (no 3-digit form) |
Color harmonies
Colors that go with Siren Scarlet, 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 #B21D1D | Ratio | AA | AAA | AA large |
|---|---|---|---|---|
| Sample text | 3.09:1 | Fail | Fail | Pass |
| Sample text | 6.8:1 | Pass | Fail | Pass |
| #B21D1D as text on | Ratio | AA | AAA | AA large |
|---|---|---|---|---|
| Sample text | 6.8:1 | Pass | Fail | Pass |
| Sample text | 3.09:1 | 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 #B21D1D looks to people with the most common types of color vision deficiency.
#4f461aProtanopia
no red cones#736614Deuteranopia
no green cones#c50020Tritanopia
no blue cones#5b5b5bAchromatopsia
no color vision
CSS examples
.background { background-color: #b21d1d; }
.text { color: #b21d1d; }
.border { border: 2px solid #b21d1d; }
.transparent { background-color: rgb(178 29 29 / 50%); }
.gradient { background: linear-gradient(to right, #b21d1d, #b2681d); }Similar colors
#b21f1fScarlet Blaze#b22222Firebrick#b22122Brick by Brick#b52923Upset Tomato#aa2121Red Menace#a91c1cKetchup Later#bb1e1eRed Inferno#aa251bTomato Sunrise
See #B21D1D on its hex code page
Questions
- What color is #B21D1D?
- #B21D1D is a moderate red known as Siren Scarlet. It belongs to the red family of colors.
- What is the RGB value of Siren Scarlet?
- The RGB value is 178, 29, 29: 178 red, 29 green and 29 blue on a 0 to 255 scale.
- What is the complementary color of Siren Scarlet?
- The complementary color is #1DB2B2, found by rotating the hue 180° on the color wheel.
- Is black or white text better on #B21D1D?
- White text. Black text has a contrast ratio of 3.09:1 and white text 6.8:1. WCAG asks for at least 4.5:1 for normal text.