#3F4021 Color

#3F4021 is rgb(63, 64, 33) in RGB, hsl(62, 32%, 19%) in HSL, and about cmyk(2%, 0%, 48%, 75%) in CMYK. It has no registered color name of its own — the closest is Rifle Green (#414833), clearly related but distinguishable side by side at ΔE 7.91. White text is the more readable choice on this background.

#3F4021

HEX#3F4021

RGBrgb(63, 64, 33)

HSLhsl(62, 32%, 19%)

HSVhsv(62, 48%, 25%)

CMYKcmyk(2%, 0%, 48%, 75%)

OKLCHoklch(36.2% 0.048 110.2)

LABlab(26.37% -4.51 18.74)

LCHlch(26.37% 19.27 103.54)

What #3F4021 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 #3F4021, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Rifle Green#414833ΔE 7.91 Dark Olive#3C341FΔE 8.1 Kombu Green#354230ΔE 10.36 Brown (CMY)#4B3621ΔE 12.28 Army Green#4B5320ΔE 12.87 Dark Lava#483C32ΔE 13.55

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

#3F4021 Channel Values

How #3F4021 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 63 · G 64 · B 33	8-bit channels as sent to the display
HSL	H 62° · S 32% · L 19%	Easiest model for building lighter and darker variants
HSV	H 62° · S 48% · V 25%	Matches the picker in most design tools
CMYK	C 2% · M 0% · Y 48% · K 75%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	10.68:1 vs white · 1.97:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #3F4021 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 text10.68:1AA normal AA large AAA normal

Fails AABlack text1.97:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #3F4021 in the contrast checker.

Colors That Go With #3F4021

Pairings derived from color-wheel relationships. The complementary color sits opposite #3F4021; 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 #3F4021

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 #3F4021.

How #3F4021 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#3F4021

Protanopia#404021

Protanomaly#3F4021

Deuteranopia#404021

Deuteranomaly#3F4021

Tritanopia#423D3D

Tritanomaly#413E34

Achromatopsia#3E3E3E

Test a full palette in the color blindness simulator.

Using #3F4021 in Code

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

CSS custom property--color-3f4021: #3F4021;

CSS backgroundbackground-color: #3F4021;

Tailwind configcolors: { 'color-3f4021': '#3F4021' }

SwiftUIColor(red: 0.247, green: 0.251, blue: 0.129)

Android XML<color name="color_3f4021">#3F4021</color>

SVG fillfill="#3F4021"

More Yellow Colors

#3F4021 sits in the yellow family. These are its neighbours across that family's full range, each with its own breakdown.

181807 fffff5 1b1404 fffff0 1f1f00 ffffeb 242400 ffffe5 2a2913 ffffe0 2b2003 ffffd6 573a00 856514 b0a94f cc9900 e0e000 edeae0 f2f1e3 f8f3c9 fcfce8 ffcc00 fff000 ffff0f

#3F4021 Frequently Asked Questions

What color is #3F4021?

#3F4021 is a darkest yellow — rgb(63, 64, 33) in RGB and hsl(62, 32%, 19%) in HSL. It carries no registered color name of its own; the closest named color is Rifle Green (#414833), which is clearly related but distinguishable side by side at a CIE76 distance of 7.91.

What is the RGB value of #3F4021?

#3F4021 is rgb(63, 64, 33) — red 63, green 64, and blue 33 on the 0-255 scale.

What is the CMYK value of #3F4021?

#3F4021 converts to approximately cmyk(2%, 0%, 48%, 75%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #3F4021 be black or white?

White text is the more readable choice. #3F4021 scores 10.68:1 against white and 1.97:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #3F4021 as a CSS color keyword?

No. #3F4021 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 darkolivegreen (#556B2F) at a CIE76 distance of 23.04, which is visibly different.

Open #3F4021 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 yellow in the color library, the guide to shades of yellow, or the full color library.