Skip to content

#63BB9F Color

#63BB9F is rgb(99, 187, 159) in RGB, hsl(161, 39%, 56%) in HSL, and about cmyk(47%, 0%, 15%, 27%) in CMYK. It has no registered color name of its own — the closest is Medium Aquamarine (#66CDAA), clearly related but distinguishable side by side at ΔE 7.84. Black text is the more readable choice on this background.

#63BB9F
HEX#63BB9F
RGBrgb(99, 187, 159)
HSLhsl(161, 39%, 56%)
HSVhsv(161, 47%, 73%)
CMYKcmyk(47%, 0%, 15%, 27%)
OKLCHoklch(72.9% 0.095 170.7)
LABlab(69.83% -32.88 5.62)
LCHlch(69.83% 33.35 170.31)

What #63BB9F 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 #63BB9F, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Aquamarine#66CDAAΔE 7.84Keppel#3AB09EΔE 9.18Zomp#39A78EΔE 9.26Polished Pine#5DA493ΔE 10.63Green Sheen#6EAEA1ΔE 11.33Pearl Aqua#88D8C0ΔE 11.47

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

#63BB9F Channel Values

How #63BB9F 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 99 · G 187 · B 1598-bit channels as sent to the display
HSLH 161° · S 39% · L 56%Easiest model for building lighter and darker variants
HSVH 161° · S 47% · V 73%Matches the picker in most design tools
CMYKC 47% · M 0% · Y 15% · K 27%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.3:1 vs white · 9.14:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #63BB9F 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 text2.3:1AA normal AA large AAA normal
TextBlack text9.14:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #63BB9F in the contrast checker.

Colors That Go With #63BB9F

Pairings derived from color-wheel relationships. The complementary color sits opposite #63BB9F; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#63BB9F
Complementary
#BB637F
Analogous
#63BB73
Analogous
#63ABBB
Triadic
#9F63BB
Triadic
#BB9F63
Split comp.
#BB63AB
Split comp.
#BB7363

Tints & Shades of #63BB9F

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

#78C4AC
#8ECDB9
#A3D7C6
#B8E0D3
#CDE9E0
#E3F3EE

Shades

#4CAE8F
#409178
#357963
#285C4C
#1E4337
#112720

Want a full 50-950 ramp with semantic roles? Generate design tokens from #63BB9F.

How #63BB9F 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#63BB9F
Protanopia#B0B09F
Protanomaly#97B49F
Deuteranopia#A5A5A1
Deuteranomaly#8FAEA0
Tritanopia#6AB8B8
Tritanomaly#67B9AE
Achromatopsia#ABABAB

Test a full palette in the color blindness simulator.

Using #63BB9F in Code

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

CSS custom property--color-63bb9f: #63BB9F;
CSS backgroundbackground-color: #63BB9F;
Tailwind configcolors: { 'color-63bb9f': '#63BB9F' }
SwiftUIColor(red: 0.388, green: 0.733, blue: 0.624)
Android XML<color name="color_63bb9f">#63BB9F</color>
SVG fillfill="#63BB9F"

More Green Colors

#63BB9F sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#63BB9F Frequently Asked Questions

What color is #63BB9F?

#63BB9F is a mid-tone green — rgb(99, 187, 159) in RGB and hsl(161, 39%, 56%) in HSL. It carries no registered color name of its own; the closest named color is Medium Aquamarine (#66CDAA), which is clearly related but distinguishable side by side at a CIE76 distance of 7.84.

What is the RGB value of #63BB9F?

#63BB9F is rgb(99, 187, 159) — red 99, green 187, and blue 159 on the 0-255 scale.

What is the CMYK value of #63BB9F?

#63BB9F converts to approximately cmyk(47%, 0%, 15%, 27%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #63BB9F be black or white?

Black text is the more readable choice. #63BB9F scores 2.3:1 against white and 9.14:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #63BB9F as a CSS color keyword?

No. #63BB9F 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 7.84, which is clearly related but distinguishable side by side.

Open #63BB9F 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.