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#1BC581 Color

#1BC581 is rgb(27, 197, 129) in RGB, hsl(156, 76%, 44%) in HSL, and about cmyk(86%, 0%, 35%, 23%) in CMYK. It has no registered color name of its own — the closest is Emerald (#50C878), clearly related but distinguishable side by side at ΔE 9.3. Black text is the more readable choice on this background.

#1BC581
HEX#1BC581
RGBrgb(27, 197, 129)
HSLhsl(156, 76%, 44%)
HSVhsv(156, 86%, 77%)
CMYKcmyk(86%, 0%, 35%, 23%)
OKLCHoklch(72.8% 0.162 159.1)
LABlab(70.60% -53.91 22.33)
LCHlch(70.60% 58.35 157.50)

What #1BC581 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 #1BC581, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Emerald#50C878ΔE 9.3GO Green#00AB66ΔE 9.64Caribbean Green#00CC99ΔE 9.65Medium Sea Green#3CB371ΔE 9.69Green Frog#00A86BΔE 10.92Android Green#3DDC84ΔE 12.07

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

#1BC581 Channel Values

How #1BC581 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 27 · G 197 · B 1298-bit channels as sent to the display
HSLH 156° · S 76% · L 44%Easiest model for building lighter and darker variants
HSVH 156° · S 86% · V 77%Matches the picker in most design tools
CMYKC 86% · M 0% · Y 35% · K 23%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.25:1 vs white · 9.35:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #1BC581 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 text2.25:1AA normal AA large AAA normal
TextBlack text9.35:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #1BC581 in the contrast checker.

Colors That Go With #1BC581

Pairings derived from color-wheel relationships. The complementary color sits opposite #1BC581; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#1BC581
Complementary
#C51B5F
Analogous
#1BC52C
Analogous
#1BB4C5
Triadic
#811BC5
Triadic
#C5811B
Split comp.
#C51BB4
Split comp.
#C52C1B

Tints & Shades of #1BC581

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

#28E297
#47E6A6
#6BEBB8
#8FF0C9
#B3F5DA
#D2F9E9

Shades

#17AB70
#149461
#11794F
#0D5E3E
#09432C
#062D1D

Want a full 50-950 ramp with semantic roles? Generate design tokens from #1BC581.

How #1BC581 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#1BC581
Protanopia#B6B682
Protanomaly#91BC81
Deuteranopia#A5A585
Deuteranomaly#84B383
Tritanopia#42BEBE
Tritanomaly#36C1A9
Achromatopsia#ADADAD

Test a full palette in the color blindness simulator.

Using #1BC581 in Code

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

CSS custom property--color-1bc581: #1BC581;
CSS backgroundbackground-color: #1BC581;
Tailwind configcolors: { 'color-1bc581': '#1BC581' }
SwiftUIColor(red: 0.106, green: 0.773, blue: 0.506)
Android XML<color name="color_1bc581">#1BC581</color>
SVG fillfill="#1BC581"

More Green Colors

#1BC581 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#1BC581 Frequently Asked Questions

What color is #1BC581?

#1BC581 is a mid-tone green — rgb(27, 197, 129) in RGB and hsl(156, 76%, 44%) in HSL. It carries no registered color name of its own; the closest named color is Emerald (#50C878), which is clearly related but distinguishable side by side at a CIE76 distance of 9.3.

What is the RGB value of #1BC581?

#1BC581 is rgb(27, 197, 129) — red 27, green 197, and blue 129 on the 0-255 scale.

What is the CMYK value of #1BC581?

#1BC581 converts to approximately cmyk(86%, 0%, 35%, 23%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #1BC581 be black or white?

Black text is the more readable choice. #1BC581 scores 2.25:1 against white and 9.35:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #1BC581 as a CSS color keyword?

No. #1BC581 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 mediumseagreen (#3CB371) at a CIE76 distance of 9.69, which is clearly related but distinguishable side by side.

Open #1BC581 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.