Blue color · XKCD survey name
Dark Periwinkle Color Code: #665FD1
The HEX code for Dark Periwinkle is #665FD1. It is a medium, rich blue color made of 102 red, 95 green and 209 blue (HSL 244°, 55%, 60%). White text reads comfortably on it (5.09:1 contrast).
Dark Periwinkle color values
#665FD1
rgb(102, 95, 209)
hsl(244, 55%, 60%)
244, 55%, 82%
hwb(244 37% 18%)
51%, 55%, 0%, 18%
6709201
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Dark Periwinkle?
“Dark Periwinkle” is a crowd-sourced name from the XKCD Color Survey, in which participants typed names for colors they were shown. It is a popular everyday label rather than an official standard.
Its hue angle of 244° places it in the blue part of the color wheel, with 55% saturation (rich) and 60% lightness (medium). It is a cool color.
Compared with the other blue colors in the Aqeeb Studio library, it is lighter than 76% of them and more saturated than 29% of them.
Its relative luminance is 0.156, which makes it a mid-tone color. That is below the 0.179 crossover point at which black and white text have equal contrast, so white text has the advantage.
Dark Periwinkle counts as a dark color: its HSL lightness is 60% and its relative luminance is 0.156. White text reads comfortably on it (5.09:1 contrast).
Text contrast on Dark Periwinkle
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 5.09:1 Good | Pass | Pass | Fail | Pass |
| Black text | Sample text | 4.12:1 Limited | Fail | Pass | Fail | Fail |
Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.
Colors that go with Dark Periwinkle
Complementary color
Complementary colors sit directly opposite each other on the color wheel (180° apart). They give the strongest hue contrast, which suits calls to action and accents.
Analogous colors
Analogous colors are neighbors on the wheel, 30° either side of the base hue. They blend smoothly and are easy to combine in backgrounds, gradients and illustrations.
Triadic colors
A triadic scheme uses three hues spaced 120° apart. It is lively yet balanced, and works best when one color leads and the other two act as accents.
Split-complementary colors
Split-complementary keeps the base color and uses the two colors on either side of its complement (150° and 210°). The contrast is strong but gentler than a direct complement.
Tetradic colors
A tetradic (rectangle) scheme combines two complementary pairs at 0°, 60°, 180° and 240°. It offers variety but needs one dominant color to stay balanced.
Monochromatic variants
Monochromatic variants keep the same hue and saturation and only change lightness, which makes them dependable for UI scales and subtle layered designs.
A “≈” before a name means the exact harmony color has no named match, so the link goes to the closest named color.
Tints and shades of Dark Periwinkle
Lighter tints (mixed with white)
Darker shades (mixed with black)
Select any swatch to copy its HEX code. Build longer scales with the tints and shades tool.
Similar colors
Where to use Dark Periwinkle
- Button, banner and badge backgrounds with white text (5.09:1 contrast)
- Large headings, icons and graphics, where a 3:1 contrast ratio is enough
- Links, buttons and primary interface accents
- Corporate, finance and software branding
- Headers and navigation bars
- Charts and dashboards
Use Dark Periwinkle in CSS
:root {
--color-dark-periwinkle: #665FD1;
}
.element {
color: var(--color-dark-periwinkle);
background-color: #665FD1;
border: 2px solid #665FD1;
}Questions about Dark Periwinkle
What is the HEX code for Dark Periwinkle?
Dark Periwinkle is #665FD1.
What is the RGB value of Dark Periwinkle?
The RGB value of Dark Periwinkle is 102, 95, 209: 102 red, 95 green and 209 blue on a 0–255 scale, written rgb(102, 95, 209) in CSS.
What is the HSL value of Dark Periwinkle?
The HSL value of Dark Periwinkle is 244°, 55%, 60% (hue, saturation, lightness), written hsl(244, 55%, 60%) in CSS.
What is the CMYK value of Dark Periwinkle?
A standard conversion gives about C 51%, M 55%, Y 0%, K 18%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Dark Periwinkle a light or dark color?
Dark Periwinkle counts as a dark color: its HSL lightness is 60% and its relative luminance is 0.156. White text reads comfortably on it (5.09:1 contrast).
How does Dark Periwinkle look with white text?
White text on Dark Periwinkle has a contrast ratio of 5.09:1, rated Good. It meets WCAG AA for normal text.
How does Dark Periwinkle look with black text?
Black text on Dark Periwinkle has a contrast ratio of 4.12:1, rated Limited. It does not reach WCAG AA for normal text; use large text only.
What colors go well with Dark Periwinkle?
Light Olive Green is its complementary color, and Faded Blue sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Dark Periwinkle be used?
It suits button, banner and badge backgrounds with white text (5.09:1 contrast); large headings, icons and graphics, where a 3:1 contrast ratio is enough; links, buttons and primary interface accents.
How do I use Dark Periwinkle in CSS?
Use color: #665FD1; for text, background-color: #665FD1; for fills, or define a custom property such as --color-dark-periwinkle: #665FD1; and reuse it with var(--color-dark-periwinkle).
About this color page
Crowd-sourced name from the XKCD Color Survey (CC0). Values are calculated from the HEX code; color names are labels, not trademarks or standards unless stated. Screens render colors differently, so always check important colors on your own device. See the disclaimer.