#40210D Color

#40210D is rgb(64, 33, 13) in RGB, hsl(24, 66%, 15%) in HSL, and about cmyk(0%, 48%, 80%, 75%) in CMYK. It has no registered color name of its own — the closest is Brown (CMY) (#4B3621), visibly different at ΔE 10.37. White text is the more readable choice on this background.

#40210D

HEX#40210D

RGBrgb(64, 33, 13)

HSLhsl(24, 66%, 15%)

HSVhsv(24, 80%, 25%)

CMYKcmyk(0%, 48%, 80%, 75%)

OKLCHoklch(28.5% 0.057 51.3)

LABlab(16.77% 13.85 19.36)

LCHlch(16.77% 23.80 54.43)

What #40210D 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 #40210D, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Brown (CMY)#4B3621ΔE 10.37 Zinnwaldite Brown#2C1608ΔE 10.38 Bister (Bistre)#3D2B1FΔE 10.79 Black Bean#3D0C02ΔE 11.61 Dark Sienna#3C1414ΔE 11.61 Seal Brown#59260BΔE 13.58

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

#40210D Channel Values

How #40210D 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 64 · G 33 · B 13	8-bit channels as sent to the display
HSL	H 24° · S 66% · L 15%	Easiest model for building lighter and darker variants
HSV	H 24° · S 80% · V 25%	Matches the picker in most design tools
CMYK	C 0% · M 48% · Y 80% · K 75%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	14.57:1 vs white · 1.44:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #40210D 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 text14.57:1AA normal AA large AAA normal

Fails AABlack text1.44:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #40210D in the contrast checker.

Colors That Go With #40210D

Pairings derived from color-wheel relationships. The complementary color sits opposite #40210D; 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 #40210D

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 #40210D.

How #40210D 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#40210D

Protanopia#28280D

Protanomaly#33250D

Deuteranopia#2E2E0A

Deuteranomaly#36290B

Tritanopia#411F1F

Tritanomaly#412019

Achromatopsia#292929

Test a full palette in the color blindness simulator.

Using #40210D in Code

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

CSS custom property--color-40210d: #40210D;

CSS backgroundbackground-color: #40210D;

Tailwind configcolors: { 'color-40210d': '#40210D' }

SwiftUIColor(red: 0.251, green: 0.129, blue: 0.051)

Android XML<color name="color_40210d">#40210D</color>

SVG fillfill="#40210D"

More Brown Colors

#40210D sits in the brown family. These are its neighbours across that family's full range, each with its own breakdown.

100c08 e17100 1b0d04 e15501 1c1917 e05e00 1f0800 e04000 1f1400 db8f00 241205 db7900 34240e 461901 503607 5c3f19 693507 7a2100 825221 8b6f47 993300 a8732e bd3000 cc3300

#40210D Frequently Asked Questions

What color is #40210D?

#40210D is a darkest brown — rgb(64, 33, 13) in RGB and hsl(24, 66%, 15%) in HSL. It carries no registered color name of its own; the closest named color is Brown (CMY) (#4B3621), which is visibly different at a CIE76 distance of 10.37.

What is the RGB value of #40210D?

#40210D is rgb(64, 33, 13) — red 64, green 33, and blue 13 on the 0-255 scale.

What is the CMYK value of #40210D?

#40210D converts to approximately cmyk(0%, 48%, 80%, 75%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #40210D be black or white?

White text is the more readable choice. #40210D scores 14.57:1 against white and 1.44:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #40210D as a CSS color keyword?

No. #40210D 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 29.12, which is a different colour altogether.

Open #40210D 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 brown in the color library, the guide to shades of brown, or the full color library.