Green color · XKCD survey name
Swamp Color Code: #698339
Swamp is a medium-dark, soft yellow-green color with the hexadecimal value #698339. In RGB it is 105, 131, 57 and in HSL it is 81°, 39%, 37%. Black text reads best on it (4.90:1 contrast).
Swamp color values
#698339
rgb(105, 131, 57)
hsl(81, 39%, 37%)
81, 56%, 51%
hwb(81 22% 49%)
20%, 0%, 56%, 49%
6914873
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Swamp?
“Swamp” 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 81° places it in the yellow-green part of the color wheel, with 39% saturation (soft) and 37% lightness (medium-dark). It sits between warm and cool.
Compared with the other green colors in the Aqeeb Studio library, it is lighter than 26% of them and more saturated than 14% of them.
Its relative luminance is 0.195, which makes it a mid-tone color. That is above the 0.179 crossover point at which black and white text have equal contrast, so black text has the advantage.
Swamp counts as a light color: its HSL lightness is 37% and its relative luminance is 0.195. Black text reads best on it (4.90:1 contrast).
Text contrast on Swamp
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 4.28:1 Limited | Fail | Pass | Fail | Fail |
| Black text | Sample text | 4.90:1 Good | Pass | Pass | Fail | Pass |
Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.
Colors that go with Swamp
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 Swamp
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 Swamp
- Card, highlight and section backgrounds with dark text (4.90:1 contrast with black)
- Large headings, icons and graphics, where a 3:1 contrast ratio is enough
- Calm backgrounds and section fills
- Success and confirmation states (with a label or icon)
- Eco, health and finance-style branding
- Charts, maps and nature illustrations
Use Swamp in CSS
:root {
--color-swamp: #698339;
}
.element {
color: var(--color-swamp);
background-color: #698339;
border: 2px solid #698339;
}Questions about Swamp
What is the HEX code for Swamp?
Swamp is #698339.
What is the RGB value of Swamp?
The RGB value of Swamp is 105, 131, 57: 105 red, 131 green and 57 blue on a 0–255 scale, written rgb(105, 131, 57) in CSS.
What is the HSL value of Swamp?
The HSL value of Swamp is 81°, 39%, 37% (hue, saturation, lightness), written hsl(81, 39%, 37%) in CSS.
What is the CMYK value of Swamp?
A standard conversion gives about C 20%, M 0%, Y 56%, K 49%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Swamp a light or dark color?
Swamp counts as a light color: its HSL lightness is 37% and its relative luminance is 0.195. Black text reads best on it (4.90:1 contrast).
How does Swamp look with white text?
White text on Swamp has a contrast ratio of 4.28:1, rated Limited. It does not reach WCAG AA for normal text; use large text only.
How does Swamp look with black text?
Black text on Swamp has a contrast ratio of 4.90:1, rated Good. It meets WCAG AA for normal text.
What colors go well with Swamp?
Dark Slate Blue is its complementary color, and Drab sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Swamp be used?
It suits card, highlight and section backgrounds with dark text (4.90:1 contrast with black); large headings, icons and graphics, where a 3:1 contrast ratio is enough; calm backgrounds and section fills.
How do I use Swamp in CSS?
Use color: #698339; for text, background-color: #698339; for fills, or define a custom property such as --color-swamp: #698339; and reuse it with var(--color-swamp).
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.