Green color · XKCD survey name
Bright Sea Green Color Code: #05FFA6
The HEX code for Bright Sea Green is #05FFA6. It is a medium, vivid blue-green color made of 5 red, 255 green and 166 blue (HSL 159°, 100%, 51%). Black text reads best on it (15.86:1 contrast).
Bright Sea Green color values
#05FFA6
rgb(5, 255, 166)
hsl(159, 100%, 51%)
159, 98%, 100%
hwb(159 2% 0%)
98%, 0%, 35%, 0%
393126
CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.
What is Bright Sea Green?
“Bright Sea Green” 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 159° places it in the blue-green part of the color wheel, with 100% saturation (vivid) and 51% lightness (medium). It sits between warm and cool.
Compared with the other green colors in the Aqeeb Studio library, it is lighter than 60% of them and more saturated than 89% of them.
Its relative luminance is 0.743, which makes it a very light color. That is above the 0.179 crossover point at which black and white text have equal contrast, so black text has the advantage.
Bright Sea Green counts as a light color: its HSL lightness is 51% and its relative luminance is 0.743. Black text reads best on it (15.86:1 contrast).
Text contrast on Bright Sea Green
| Text | Preview | Ratio | AA normal | AA large | AAA normal | AAA large |
|---|---|---|---|---|---|---|
| White text | Sample text | 1.32:1 Poor | Fail | Fail | Fail | Fail |
| Black text | Sample text | 15.86:1 Excellent | Pass | Pass | Pass | Pass |
Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.
Colors that go with Bright Sea Green
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 Bright Sea Green
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 Bright Sea Green
- Card, highlight and section backgrounds with dark text (15.86:1 contrast with black)
- Accents that need to stand out: call-to-action buttons, charts and illustrations
- 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 Bright Sea Green in CSS
:root {
--color-bright-sea-green: #05FFA6;
}
.element {
color: var(--color-bright-sea-green);
background-color: #05FFA6;
border: 2px solid #05FFA6;
}Questions about Bright Sea Green
What is the HEX code for Bright Sea Green?
Bright Sea Green is #05FFA6.
What is the RGB value of Bright Sea Green?
The RGB value of Bright Sea Green is 5, 255, 166: 5 red, 255 green and 166 blue on a 0–255 scale, written rgb(5, 255, 166) in CSS.
What is the HSL value of Bright Sea Green?
The HSL value of Bright Sea Green is 159°, 100%, 51% (hue, saturation, lightness), written hsl(159, 100%, 51%) in CSS.
What is the CMYK value of Bright Sea Green?
A standard conversion gives about C 98%, M 0%, Y 35%, K 0%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.
Is Bright Sea Green a light or dark color?
Bright Sea Green counts as a light color: its HSL lightness is 51% and its relative luminance is 0.743. Black text reads best on it (15.86:1 contrast).
How does Bright Sea Green look with white text?
White text on Bright Sea Green has a contrast ratio of 1.32:1, rated Poor. It falls below the WCAG minimum for text.
How does Bright Sea Green look with black text?
Black text on Bright Sea Green has a contrast ratio of 15.86:1, rated Excellent. It meets WCAG AA for normal text.
What colors go well with Bright Sea Green?
Pink Red is its complementary color, and Electric Green sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.
Where can Bright Sea Green be used?
It suits card, highlight and section backgrounds with dark text (15.86:1 contrast with black); accents that need to stand out: call-to-action buttons, charts and illustrations; calm backgrounds and section fills.
How do I use Bright Sea Green in CSS?
Use color: #05FFA6; for text, background-color: #05FFA6; for fills, or define a custom property such as --color-bright-sea-green: #05FFA6; and reuse it with var(--color-bright-sea-green).
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.