#21390A Color

#21390A is rgb(33, 57, 10) in RGB, hsl(91, 70%, 13%) in HSL, and about cmyk(42%, 0%, 82%, 78%) in CMYK. It has no registered color name of its own — the closest is Forest Green (Traditional) (#014421), visibly different at ΔE 14.3. White text is the more readable choice on this background.

#21390A

HEX#21390A

RGBrgb(33, 57, 10)

HSLhsl(91, 70%, 13%)

HSVhsv(91, 82%, 22%)

CMYKcmyk(42%, 0%, 82%, 78%)

OKLCHoklch(31.4% 0.077 132.9)

LABlab(21.17% -16.65 24.51)

LCHlch(21.17% 29.63 124.19)

What #21390A 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 #21390A, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Forest Green (Traditional)#014421ΔE 14.3 Army Green#4B5320ΔE 14.82 Xander#44500CΔE 15.6 British Racing Green#004225ΔE 15.76 Dark Moss Green#4A5D23ΔE 16.73 Mughal Green#306030ΔE 17.75

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

#21390A Channel Values

How #21390A 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 33 · G 57 · B 10	8-bit channels as sent to the display
HSL	H 91° · S 70% · L 13%	Easiest model for building lighter and darker variants
HSV	H 91° · S 82% · V 22%	Matches the picker in most design tools
CMYK	C 42% · M 0% · Y 82% · K 78%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	12.69:1 vs white · 1.65:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #21390A 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 text12.69:1AA normal AA large AAA normal

Fails AABlack text1.65:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #21390A in the contrast checker.

Colors That Go With #21390A

Pairings derived from color-wheel relationships. The complementary color sits opposite #21390A; 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 #21390A

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 #21390A.

How #21390A 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#21390A

Protanopia#36360A

Protanomaly#2F370A

Deuteranopia#32320C

Deuteranomaly#2C350B

Tritanopia#273535

Tritanomaly#25372A

Achromatopsia#333333

Test a full palette in the color blindness simulator.

Using #21390A in Code

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

CSS custom property--color-21390a: #21390A;

CSS backgroundbackground-color: #21390A;

Tailwind configcolors: { 'color-21390a': '#21390A' }

SwiftUIColor(red: 0.129, green: 0.224, blue: 0.039)

Android XML<color name="color_21390a">#21390A</color>

SVG fillfill="#21390A"

More Green Colors

#21390A 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

#21390A Frequently Asked Questions

What color is #21390A?

#21390A is a darkest green — rgb(33, 57, 10) in RGB and hsl(91, 70%, 13%) in HSL. It carries no registered color name of its own; the closest named color is Forest Green (Traditional) (#014421), which is visibly different at a CIE76 distance of 14.3.

What is the RGB value of #21390A?

#21390A is rgb(33, 57, 10) — red 33, green 57, and blue 10 on the 0-255 scale.

What is the CMYK value of #21390A?

#21390A converts to approximately cmyk(42%, 0%, 82%, 78%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #21390A be black or white?

White text is the more readable choice. #21390A scores 12.69:1 against white and 1.65:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #21390A as a CSS color keyword?

No. #21390A 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 21.97, which is visibly different.

Open #21390A 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.