#155B21 Color

#155B21 is rgb(21, 91, 33) in RGB, hsl(130, 63%, 22%) in HSL, and about cmyk(77%, 0%, 64%, 64%) in CMYK. It has no registered color name of its own — the closest is Mughal Green (#306030), clearly related but distinguishable side by side at ΔE 8.61. White text is the more readable choice on this background.

#155B21

HEX#155B21

RGBrgb(21, 91, 33)

HSLhsl(130, 63%, 22%)

HSVhsv(130, 77%, 36%)

CMYKcmyk(77%, 0%, 64%, 64%)

OKLCHoklch(41.5% 0.113 145.8)

LABlab(33.48% -32.26 26.36)

LCHlch(33.48% 41.66 140.75)

What #155B21 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 #155B21, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Mughal Green#306030ΔE 8.61 Lincoln Green#195905ΔE 10.29 Cadmium Green#006B3CΔE 10.68 Dartmouth Green#00703CΔE 11.2 Dark Spring Green#177245ΔE 12.94 Royal Green#136207ΔE 13.23

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

#155B21 Channel Values

How #155B21 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 21 · G 91 · B 33	8-bit channels as sent to the display
HSL	H 130° · S 63% · L 22%	Easiest model for building lighter and darker variants
HSV	H 130° · S 77% · V 36%	Matches the picker in most design tools
CMYK	C 77% · M 0% · Y 64% · K 64%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	8.23:1 vs white · 2.55:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #155B21 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 text8.23:1AA normal AA large AAA normal

Fails AABlack text2.55:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #155B21 in the contrast checker.

Colors That Go With #155B21

Pairings derived from color-wheel relationships. The complementary color sits opposite #155B21; 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 #155B21

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 #155B21.

How #155B21 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#155B21

Protanopia#545422

Protanomaly#435721

Deuteranopia#4C4C24

Deuteranomaly#3D5223

Tritanopia#255656

Tritanomaly#205846

Achromatopsia#4F4F4F

Test a full palette in the color blindness simulator.

Using #155B21 in Code

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

CSS custom property--color-155b21: #155B21;

CSS backgroundbackground-color: #155B21;

Tailwind configcolors: { 'color-155b21': '#155B21' }

SwiftUIColor(red: 0.082, green: 0.357, blue: 0.129)

Android XML<color name="color_155b21">#155B21</color>

SVG fillfill="#155B21"

More Green Colors

#155B21 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

#155B21 Frequently Asked Questions

What color is #155B21?

#155B21 is a dark green — rgb(21, 91, 33) in RGB and hsl(130, 63%, 22%) in HSL. It carries no registered color name of its own; the closest named color is Mughal Green (#306030), which is clearly related but distinguishable side by side at a CIE76 distance of 8.61.

What is the RGB value of #155B21?

#155B21 is rgb(21, 91, 33) — red 21, green 91, and blue 33 on the 0-255 scale.

What is the CMYK value of #155B21?

#155B21 converts to approximately cmyk(77%, 0%, 64%, 64%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #155B21 be black or white?

White text is the more readable choice. #155B21 scores 8.23:1 against white and 2.55:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #155B21 as a CSS color keyword?

No. #155B21 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 darkgreen (#006400) at a CIE76 distance of 16.53, which is visibly different.

Open #155B21 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.