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#638221 Color

#638221 is rgb(99, 130, 33) in RGB, hsl(79, 60%, 32%) in HSL, and about cmyk(24%, 0%, 75%, 49%) 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 5.97. Black text is the more readable choice on this background.

#638221
HEX#638221
RGBrgb(99, 130, 33)
HSLhsl(79, 60%, 32%)
HSVhsv(79, 75%, 51%)
CMYKcmyk(24%, 0%, 75%, 49%)
OKLCHoklch(56.3% 0.127 125.9)
LABlab(50.54% -22.41 45.46)
LCHlch(50.54% 50.68 116.24)

What #638221 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 #638221, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Olive Drab#6B8E23ΔE 5.97Maximum Green#5E8C31ΔE 7.33Sap Green#507D2AΔE 8.84Khaki Green#728639ΔE 9.68Olive#808000ΔE 16.8Metallic Green#296E01ΔE 16.83

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

#638221 Channel Values

How #638221 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 99 · G 130 · B 338-bit channels as sent to the display
HSLH 79° · S 60% · L 32%Easiest model for building lighter and darker variants
HSVH 79° · S 75% · V 51%Matches the picker in most design tools
CMYKC 24% · M 0% · Y 75% · K 49%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.43:1 vs white · 4.75:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #638221 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.

Fails AAWhite text4.43:1AA normal AA large AAA normal
TextBlack text4.75:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #638221 in the contrast checker.

Colors That Go With #638221

Pairings derived from color-wheel relationships. The complementary color sits opposite #638221; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#638221
Complementary
#402183
Analogous
#837121
Analogous
#338321
Triadic
#216483
Triadic
#832164
Split comp.
#213383
Split comp.
#712183

Tints & Shades of #638221

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

#80A72A
#9ECD37
#AFD65C
#C3E085
#D5EAA9
#E9F4D2

Shades

#57721D
#4B6218
#3E5214
#324110
#25310C
#192108

Want a full 50-950 ramp with semantic roles? Generate design tokens from #638221.

How #638221 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#638221
Protanopia#7D7D22
Protanomaly#747F21
Deuteranopia#797924
Deuteranomaly#717D23
Tritanopia#6C7B7B
Tritanomaly#697E63
Achromatopsia#787878

Test a full palette in the color blindness simulator.

Using #638221 in Code

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

CSS custom property--color-638221: #638221;
CSS backgroundbackground-color: #638221;
Tailwind configcolors: { 'color-638221': '#638221' }
SwiftUIColor(red: 0.388, green: 0.510, blue: 0.129)
Android XML<color name="color_638221">#638221</color>
SVG fillfill="#638221"

More Green Colors

#638221 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#638221 Frequently Asked Questions

What color is #638221?

#638221 is a dark green — rgb(99, 130, 33) in RGB and hsl(79, 60%, 32%) 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 5.97.

What is the RGB value of #638221?

#638221 is rgb(99, 130, 33) — red 99, green 130, and blue 33 on the 0-255 scale.

What is the CMYK value of #638221?

#638221 converts to approximately cmyk(24%, 0%, 75%, 49%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #638221 be black or white?

Black text is the more readable choice. #638221 scores 4.43:1 against white and 4.75:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #638221 as a CSS color keyword?

No. #638221 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 5.97, which is clearly related but distinguishable side by side.

Open #638221 in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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