Palettes / Colors / #21800A
#21800A — Deep Vivid Green
#21800A is a green color we call Deep Vivid Green, closest to the named color ForestGreen (#228B22). It belongs to the green family.
Color name
Closest CSS keyword: forestgreen (#228B22) — not an exact match. CSS forestgreen gives you #228B22, a different color; use #21800A when you need this exact shade.
Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.
#21800A is a warm-leaning green color associated with growth, calm and balance. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.
Its strongest partner is its complement #680A80; it also sits naturally between #5D800A and #0A802D. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #21800A |
|---|---|
| RGB | 33, 128, 10 |
| HSL | 108°, 86%, 27% |
| HSV | 108°, 92%, 50% |
| CMYK | 74%, 0%, 92%, 50% |
| XYZ | 8.40, 15.78, 2.89 |
| Yxy | 15.78, 0.3103, 0.5829 |
| CIE-Lab | 46.69, -47.49, 48.42 |
| Hunter Lab | 39.73, -30.13, 22.15 |
RGB & CMYK percentages
Red 13% · Green 50% · Blue 4%
Cyan 74% · Magenta 0% · Yellow 92% · Key 50%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #21800A
.text { color: #21800A; }
.background { background-color: #21800A; }
.border { border: 3px solid #21800A; }
.text-rgb { color: rgb(33, 128, 10); }
.text-hsl { color: hsl(108, 86%, 27%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #21800A; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(33, 128, 10, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #21800A; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(33, 128, 10, 0.8); }
HTML: <p style="color:#21800A">Text here</p> · <div style="background-color:#21800A">Div content here</div>
Shades of #21800A
Tints of #21800A
Tones of #21800A
Color harmonies
Complementary — #680A80:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 5.05:1 AA |
|---|---|
| Against black text | 4.16:1 AA large only |
Best text color on #21800A: #FFFFFF.
Semi-transparent (opacity) text on #21800A
Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:
Smaller body text shows the effect best.
Blended color: · Contrast against #21800A: ·
How #21800A looks with color blindness
Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:
Closest design-system colors
The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:
Palettes with a similar color
These palettes use a close neighbour of #21800A rather than the exact color:
Similar colors
The closest colors that actually appear in our palette collection — click any to open its page:
Browse neighbouring colors
Frequently asked questions
What color is #21800A?
#21800A is Deep Vivid Green, a green color (RGB 33, 128, 10). Its closest standard named color is ForestGreen.
What is the RGB and HSL of #21800A?
#21800A is RGB 33, 128, 10 — HSL 108°, 86%, 27% — CMYK 74%, 0%, 92%, 50%.
What colors go with #21800A?
Its complement is #680A80; analogous partners are #5D800A and #0A802D. It also appears in 6+ palettes in our collection.
Can I use #21800A for text?
White text on #21800A has a contrast ratio of 5.05:1 (passes WCAG AA); black text gives 4.16:1.