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#18C9A8 Color

#18C9A8 is rgb(24, 201, 168) in RGB, hsl(169, 79%, 44%) in HSL, and about cmyk(88%, 0%, 16%, 21%) in CMYK. It has no registered color name of its own — the closest is Eucalyptus (#44D7A8), clearly related but distinguishable side by side at ΔE 8.7. Black text is the more readable choice on this background.

#18C9A8
HEX#18C9A8
RGBrgb(24, 201, 168)
HSLhsl(169, 79%, 44%)
HSVhsv(169, 88%, 79%)
CMYKcmyk(88%, 0%, 16%, 21%)
OKLCHoklch(74.8% 0.138 174.9)
LABlab(72.53% -48.54 4.32)
LCHlch(72.53% 48.73 174.91)

What #18C9A8 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 #18C9A8, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Eucalyptus#44D7A8ΔE 8.7Mountain Meadow#30BA8FΔE 8.76Caribbean Green#00CC99ΔE 9.97Medium Aquamarine#66CDAAΔE 11.74Jungle Green#29AB87ΔE 12.28Turquoise#40E0D0ΔE 12.8

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

#18C9A8 Channel Values

How #18C9A8 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 24 · G 201 · B 1688-bit channels as sent to the display
HSLH 169° · S 79% · L 44%Easiest model for building lighter and darker variants
HSVH 169° · S 88% · V 79%Matches the picker in most design tools
CMYKC 88% · M 0% · Y 16% · K 21%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.11:1 vs white · 9.96:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #18C9A8 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 text2.11:1AA normal AA large AAA normal
TextBlack text9.96:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #18C9A8 in the contrast checker.

Colors That Go With #18C9A8

Pairings derived from color-wheel relationships. The complementary color sits opposite #18C9A8; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#18C9A8
Complementary
#C91838
Analogous
#18C950
Analogous
#1891C9
Triadic
#A818C9
Triadic
#C9A818
Split comp.
#C91891
Split comp.
#C95018

Tints & Shades of #18C9A8

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

#24E5C2
#44E9CB
#68EDD5
#8DF2DF
#B1F6E9
#D1FAF2

Shades

#14AD91
#12977E
#0E7B67
#0B6050
#084439
#052E26

Want a full 50-950 ramp with semantic roles? Generate design tokens from #18C9A8.

How #18C9A8 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#18C9A8
Protanopia#B9B9A9
Protanomaly#94C0A8
Deuteranopia#A8A8AB
Deuteranomaly#86B6AA
Tritanopia#33C5C5
Tritanomaly#2BC7BA
Achromatopsia#B2B2B2

Test a full palette in the color blindness simulator.

Using #18C9A8 in Code

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

CSS custom property--color-18c9a8: #18C9A8;
CSS backgroundbackground-color: #18C9A8;
Tailwind configcolors: { 'color-18c9a8': '#18C9A8' }
SwiftUIColor(red: 0.094, green: 0.788, blue: 0.659)
Android XML<color name="color_18c9a8">#18C9A8</color>
SVG fillfill="#18C9A8"

More Green Colors

#18C9A8 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#18C9A8 Frequently Asked Questions

What color is #18C9A8?

#18C9A8 is a mid-tone green — rgb(24, 201, 168) in RGB and hsl(169, 79%, 44%) in HSL. It carries no registered color name of its own; the closest named color is Eucalyptus (#44D7A8), which is clearly related but distinguishable side by side at a CIE76 distance of 8.7.

What is the RGB value of #18C9A8?

#18C9A8 is rgb(24, 201, 168) — red 24, green 201, and blue 168 on the 0-255 scale.

What is the CMYK value of #18C9A8?

#18C9A8 converts to approximately cmyk(88%, 0%, 16%, 21%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #18C9A8 be black or white?

Black text is the more readable choice. #18C9A8 scores 2.11:1 against white and 9.96:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #18C9A8 as a CSS color keyword?

No. #18C9A8 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 11.74, which is visibly different.

Open #18C9A8 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.