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#51C2AA Color

#51C2AA is rgb(81, 194, 170) in RGB, hsl(167, 48%, 54%) in HSL, and about cmyk(58%, 0%, 12%, 24%) in CMYK. It has no registered color name of its own — the closest is Keppel (#3AB09E), clearly related but distinguishable side by side at ΔE 7.07. Black text is the more readable choice on this background.

#51C2AA
HEX#51C2AA
RGBrgb(81, 194, 170)
HSLhsl(167, 48%, 54%)
HSVhsv(167, 58%, 76%)
CMYKcmyk(58%, 0%, 12%, 24%)
OKLCHoklch(74.2% 0.109 176.8)
LABlab(71.52% -37.98 1.98)
LCHlch(71.52% 38.03 177.02)

What #51C2AA 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 #51C2AA, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Keppel#3AB09EΔE 7.07Medium Aquamarine#66CDAAΔE 7.12Zomp#39A78EΔE 9.79Light Sea Green#20B2AAΔE 10.78Verdigris#43B3AEΔE 11.4Persian Green#00A693ΔE 11.47

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

#51C2AA Channel Values

How #51C2AA 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 81 · G 194 · B 1708-bit channels as sent to the display
HSLH 167° · S 48% · L 54%Easiest model for building lighter and darker variants
HSVH 167° · S 58% · V 76%Matches the picker in most design tools
CMYKC 58% · M 0% · Y 12% · K 24%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.18:1 vs white · 9.65:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #51C2AA 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 text2.18:1AA normal AA large AAA normal
TextBlack text9.65:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #51C2AA in the contrast checker.

Colors That Go With #51C2AA

Pairings derived from color-wheel relationships. The complementary color sits opposite #51C2AA; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#51C2AA
Complementary
#C2516A
Analogous
#51C271
Analogous
#51A2C2
Triadic
#AA51C2
Triadic
#C2AA51
Split comp.
#C251A2
Split comp.
#C27151

Tints & Shades of #51C2AA

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

#68CAB5
#82D3C2
#99DBCD
#B0E3D8
#C6EBE3
#E1F4F0

Shades

#3EB198
#359782
#2C7D6B
#215E51
#18443A
#0F2A24

Want a full 50-950 ramp with semantic roles? Generate design tokens from #51C2AA.

How #51C2AA 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#51C2AA
Protanopia#B5B5AA
Protanomaly#97BAAA
Deuteranopia#A7A7AC
Deuteranomaly#8DB3AB
Tritanopia#59BFBF
Tritanomaly#56C0B7
Achromatopsia#B0B0B0

Test a full palette in the color blindness simulator.

Using #51C2AA in Code

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

CSS custom property--color-51c2aa: #51C2AA;
CSS backgroundbackground-color: #51C2AA;
Tailwind configcolors: { 'color-51c2aa': '#51C2AA' }
SwiftUIColor(red: 0.318, green: 0.761, blue: 0.667)
Android XML<color name="color_51c2aa">#51C2AA</color>
SVG fillfill="#51C2AA"

More Green Colors

#51C2AA sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#51C2AA Frequently Asked Questions

What color is #51C2AA?

#51C2AA is a mid-tone green — rgb(81, 194, 170) in RGB and hsl(167, 48%, 54%) in HSL. It carries no registered color name of its own; the closest named color is Keppel (#3AB09E), which is clearly related but distinguishable side by side at a CIE76 distance of 7.07.

What is the RGB value of #51C2AA?

#51C2AA is rgb(81, 194, 170) — red 81, green 194, and blue 170 on the 0-255 scale.

What is the CMYK value of #51C2AA?

#51C2AA converts to approximately cmyk(58%, 0%, 12%, 24%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #51C2AA be black or white?

Black text is the more readable choice. #51C2AA scores 2.18:1 against white and 9.65:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #51C2AA as a CSS color keyword?

No. #51C2AA 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 mediumaquamarine (#66CDAA) at a CIE76 distance of 7.12, which is clearly related but distinguishable side by side.

Open #51C2AA 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.