#51800F Color
#51800F is rgb(81, 128, 15) in RGB, hsl(85, 79%, 28%) in HSL, and about cmyk(37%, 0%, 88%, 50%) in CMYK. It has no registered color name of its own — the closest is Olive Drab (#6B8E23), clearly related but distinguishable side by side at ΔE 7.81. White text is the more readable choice on this background.
#51800Frgb(81, 128, 15)hsl(85, 79%, 28%)hsv(85, 88%, 50%)cmyk(37%, 0%, 88%, 50%)oklch(54.5% 0.143 131.1)lab(48.68% -29.37 48.74)lch(48.68% 56.90 121.07)What #51800F 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 #51800F, 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.
#51800F Channel Values
How #51800F 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 81 · G 128 · B 15 | 8-bit channels as sent to the display |
| HSL | H 85° · S 79% · L 28% | Easiest model for building lighter and darker variants |
| HSV | H 85° · S 88% · V 50% | Matches the picker in most design tools |
| CMYK | C 37% · M 0% · Y 88% · K 50% | Approximate ink mix; confirm with an ICC profile before printing |
| Luminance | 4.73:1 vs white · 4.44:1 vs black | WCAG 2.2 relative-luminance contrast ratios |
Text Contrast & Accessibility
WCAG 2.2 contrast ratios for text on a #51800F 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 #51800F in the contrast checker.
Colors That Go With #51800F
Pairings derived from color-wheel relationships. The complementary color sits opposite #51800F; 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 #51800F
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 #51800F.
How #51800F 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.
#51800F#7A7A10#6C7C10#737317#677814#5D7878#587C5F#737373Using #51800F in Code
Copy-ready declarations for the places this color usually ends up.
--color-51800f: #51800F;background-color: #51800F;colors: { 'color-51800f': '#51800F' }Color(red: 0.318, green: 0.502, blue: 0.059)<color name="color_51800f">#51800F</color>fill="#51800F"More Green Colors
#51800F sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.
#51800F Frequently Asked Questions
What color is #51800F?
#51800F is a dark green — rgb(81, 128, 15) in RGB and hsl(85, 79%, 28%) in HSL. It carries no registered color name of its own; the closest named color is Olive Drab (#6B8E23), which is clearly related but distinguishable side by side at a CIE76 distance of 7.81.
What is the RGB value of #51800F?
#51800F is rgb(81, 128, 15) — red 81, green 128, and blue 15 on the 0-255 scale.
What is the CMYK value of #51800F?
#51800F converts to approximately cmyk(37%, 0%, 88%, 50%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.
Should text on #51800F be black or white?
White text is the more readable choice. #51800F scores 4.73:1 against white and 4.44:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.
Can I write #51800F as a CSS color keyword?
No. #51800F 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 olivedrab (#6B8E23) at a CIE76 distance of 7.81, which is clearly related but distinguishable side by side.
Open #51800F in a Tool
Keep exploring: every green in the color library, the guide to shades of green, or the full color library.