#128121 Color
#128121 is rgb(18, 129, 33) in RGB, hsl(128, 76%, 29%) in HSL, and about cmyk(86%, 0%, 74%, 49%) in CMYK. It has no registered color name of its own — the closest is Xbox Green (#0E7A0D), very hard to tell apart at ΔE 4.66. White text is the more readable choice on this background.
#128121rgb(18, 129, 33)hsl(128, 76%, 29%)hsv(128, 86%, 51%)cmyk(86%, 0%, 74%, 49%)oklch(52.6% 0.162 144.2)lab(46.93% -44.97 40.62)lch(46.93% 60.60 137.91)What #128121 Is Called
Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #128121, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.
Browse the full index of named colors A-Z or every green in the library.
#128121 Channel Values
How #128121 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.
| Model | Channels | Notes |
|---|---|---|
| RGB | R 18 · G 129 · B 33 | 8-bit channels as sent to the display |
| HSL | H 128° · S 76% · L 29% | Easiest model for building lighter and darker variants |
| HSV | H 128° · S 86% · V 51% | Matches the picker in most design tools |
| CMYK | C 86% · M 0% · Y 74% · K 49% | Approximate ink mix; confirm with an ICC profile before printing |
| Luminance | 5.01:1 vs white · 4.19:1 vs black | WCAG 2.2 relative-luminance contrast ratios |
Text Contrast & Accessibility
WCAG 2.2 contrast ratios for text on a #128121 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.
Need a specific ratio against another background? Open #128121 in the contrast checker.
Colors That Go With #128121
Pairings derived from color-wheel relationships. The complementary color sits opposite #128121; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.
Tints & Shades of #128121
Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.
Want a full 50-950 ramp with semantic roles? Generate design tokens from #128121.
How #128121 Looks with Color Vision Deficiency
Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.
#128121#777722#5E7B22#6C6C28#557525#327A7A#287D62#6F6F6FUsing #128121 in Code
Copy-ready declarations for the places this color usually ends up.
--color-128121: #128121;background-color: #128121;colors: { 'color-128121': '#128121' }Color(red: 0.071, green: 0.506, blue: 0.129)<color name="color_128121">#128121</color>fill="#128121"More Green Colors
#128121 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.
#128121 Frequently Asked Questions
What color is #128121?
#128121 is a dark green — rgb(18, 129, 33) in RGB and hsl(128, 76%, 29%) in HSL. It carries no registered color name of its own; the closest named color is Xbox Green (#0E7A0D), which is very hard to tell apart at a CIE76 distance of 4.66.
What is the RGB value of #128121?
#128121 is rgb(18, 129, 33) — red 18, green 129, and blue 33 on the 0-255 scale.
What is the CMYK value of #128121?
#128121 converts to approximately cmyk(86%, 0%, 74%, 49%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.
Should text on #128121 be black or white?
White text is the more readable choice. #128121 scores 5.01:1 against white and 4.19:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.
Can I write #128121 as a CSS color keyword?
No. #128121 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is forestgreen (#228B22) at a CIE76 distance of 5.1, which is clearly related but distinguishable side by side.
Open #128121 in a Tool
Keep exploring: every green in the color library, the guide to shades of green, or the full color library.