Skip to content

#40644B Color

#40644B is rgb(64, 100, 75) in RGB, hsl(138, 22%, 32%) in HSL, and about cmyk(36%, 0%, 25%, 61%) in CMYK. It has no registered color name of its own — the closest is Hunter Green (#355E3B), clearly related but distinguishable side by side at ΔE 7.08. White text is the more readable choice on this background.

#40644B
HEX#40644B
RGBrgb(64, 100, 75)
HSLhsl(138, 22%, 32%)
HSVhsv(138, 36%, 39%)
CMYKcmyk(36%, 0%, 25%, 61%)
OKLCHoklch(46.8% 0.058 153.4)
LABlab(39.08% -17.96 9.96)
LCHlch(39.08% 20.54 150.99)

What #40644B 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 #40644B, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Hunter Green#355E3BΔE 7.08Artichoke Green#4B6F44ΔE 10.85Hooker's Green#49796BΔE 11.23Feldgrau#4D5D53ΔE 11.8Amazon#3B7A57ΔE 12.55Ebony#555D50ΔE 13.18

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

#40644B Channel Values

How #40644B 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 64 · G 100 · B 758-bit channels as sent to the display
HSLH 138° · S 22% · L 32%Easiest model for building lighter and darker variants
HSVH 138° · S 36% · V 39%Matches the picker in most design tools
CMYKC 36% · M 0% · Y 25% · K 61%Approximate ink mix; confirm with an ICC profile before printing
Luminance6.68:1 vs white · 3.14:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #40644B 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 text6.68:1AA normal AA large AAA normal
Fails AABlack text3.14:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #40644B in the contrast checker.

Colors That Go With #40644B

Pairings derived from color-wheel relationships. The complementary color sits opposite #40644B; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#40644B
Complementary
#644059
Analogous
#476440
Analogous
#40645C
Triadic
#4A4064
Triadic
#644A40
Split comp.
#5C4064
Split comp.
#644047

Tints & Shades of #40644B

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

#52805F
#679E77
#83AF90
#A2C3AC
#BED5C5
#DDE9E0

Shades

#385741
#304B38
#283E2F
#203225
#18251C
#101913

Want a full 50-950 ramp with semantic roles? Generate design tokens from #40644B.

How #40644B 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#40644B
Protanopia#5F5F4B
Protanomaly#54614B
Deuteranopia#5A5A4C
Deuteranomaly#515E4C
Tritanopia#446161
Tritanomaly#436259
Achromatopsia#5C5C5C

Test a full palette in the color blindness simulator.

Using #40644B in Code

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

CSS custom property--color-40644b: #40644B;
CSS backgroundbackground-color: #40644B;
Tailwind configcolors: { 'color-40644b': '#40644B' }
SwiftUIColor(red: 0.251, green: 0.392, blue: 0.294)
Android XML<color name="color_40644b">#40644B</color>
SVG fillfill="#40644B"

More Green Colors

#40644B sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#40644B Frequently Asked Questions

What color is #40644B?

#40644B is a dark green — rgb(64, 100, 75) in RGB and hsl(138, 22%, 32%) in HSL. It carries no registered color name of its own; the closest named color is Hunter Green (#355E3B), which is clearly related but distinguishable side by side at a CIE76 distance of 7.08.

What is the RGB value of #40644B?

#40644B is rgb(64, 100, 75) — red 64, green 100, and blue 75 on the 0-255 scale.

What is the CMYK value of #40644B?

#40644B converts to approximately cmyk(36%, 0%, 25%, 61%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #40644B be black or white?

White text is the more readable choice. #40644B scores 6.68:1 against white and 3.14:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #40644B as a CSS color keyword?

No. #40644B 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 darkslategray (#2F4F4F) at a CIE76 distance of 16.99, which is visibly different.

Open #40644B 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.