#121F0F Color

#121F0F is rgb(18, 31, 15) in RGB, hsl(109, 35%, 9%) in HSL, and about cmyk(42%, 0%, 52%, 88%) in CMYK. It has no registered color name of its own — the closest is Dark Jungle Green (#1A2421), clearly related but distinguishable side by side at ΔE 9.28. White text is the more readable choice on this background.

#121F0F

HEX#121F0F

RGBrgb(18, 31, 15)

HSLhsl(109, 35%, 9%)

HSVhsv(109, 52%, 12%)

CMYKcmyk(42%, 0%, 52%, 88%)

OKLCHoklch(22.2% 0.035 139.8)

LABlab(10.15% -9.04 8.39)

LCHlch(10.15% 12.34 137.12)

What #121F0F 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 #121F0F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Dark Jungle Green#1A2421ΔE 9.28 Medium Jungle Green#1C352DΔE 12.09 Phthalo Green#123524ΔE 12.14 Eerie Black#1B1B1BΔE 12.34 Off Black#1A1A1AΔE 12.37 Charcoal Black#232B2BΔE 12.87

Browse the full index of named colors A-Z or every green in the library.

#121F0F Channel Values

How #121F0F 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 31 · B 15	8-bit channels as sent to the display
HSL	H 109° · S 35% · L 9%	Easiest model for building lighter and darker variants
HSV	H 109° · S 52% · V 12%	Matches the picker in most design tools
CMYK	C 42% · M 0% · Y 52% · K 88%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	17.09:1 vs white · 1.23:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #121F0F 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.

TextWhite text17.09:1AA normal AA large AAA normal

Fails AABlack text1.23:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #121F0F in the contrast checker.

Colors That Go With #121F0F

Pairings derived from color-wheel relationships. The complementary color sits opposite #121F0F; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #121F0F

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.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #121F0F.

How #121F0F 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.

Typical#121F0F

Protanopia#1D1D0F

Protanomaly#191E0F

Deuteranopia#1B1B10

Deuteranomaly#181D0F

Tritanopia#141D1D

Tritanomaly#131E19

Achromatopsia#1C1C1C

Test a full palette in the color blindness simulator.

Using #121F0F in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-121f0f: #121F0F;

CSS backgroundbackground-color: #121F0F;

Tailwind configcolors: { 'color-121f0f': '#121F0F' }

SwiftUIColor(red: 0.071, green: 0.122, blue: 0.059)

Android XML<color name="color_121f0f">#121F0F</color>

SVG fillfill="#121F0F"

More Green Colors

#121F0F sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200 fdfff5 001f00 f7fee7 002400 f7fbf5 002c22 f5fffa 002e00 f5fff5 003300 f0fff0 008000 00db87 0d542b 20483f 33cc66 46c399 5ea500 728639 91e0b7 a3f5d8 bcd7bc d1ffed

#121F0F Frequently Asked Questions

What color is #121F0F?

#121F0F is a darkest green — rgb(18, 31, 15) in RGB and hsl(109, 35%, 9%) in HSL. It carries no registered color name of its own; the closest named color is Dark Jungle Green (#1A2421), which is clearly related but distinguishable side by side at a CIE76 distance of 9.28.

What is the RGB value of #121F0F?

#121F0F is rgb(18, 31, 15) — red 18, green 31, and blue 15 on the 0-255 scale.

What is the CMYK value of #121F0F?

#121F0F converts to approximately cmyk(42%, 0%, 52%, 88%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #121F0F be black or white?

White text is the more readable choice. #121F0F scores 17.09:1 against white and 1.23:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #121F0F as a CSS color keyword?

No. #121F0F 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 black (#000000) at a CIE76 distance of 15.98, which is visibly different.

Open #121F0F in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every green in the color library, the guide to shades of green, or the full color library.