#15DDEF Color

#15DDEF is rgb(21, 221, 239) in RGB, hsl(185, 87%, 51%) in HSL, and about cmyk(91%, 8%, 0%, 6%) in CMYK. It has no registered color name of its own — the closest is Lotion Blue (#15F2FD), clearly related but distinguishable side by side at ΔE 8.65. Black text is the more readable choice on this background.

#15DDEF

HEX#15DDEF

RGBrgb(21, 221, 239)

HSLhsl(185, 87%, 51%)

HSVhsv(185, 91%, 94%)

CMYKcmyk(91%, 8%, 0%, 6%)

OKLCHoklch(82% 0.138 205.4)

LABlab(80.31% -40.61 -22.07)

LCHlch(80.31% 46.22 208.52)

What #15DDEF 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 #15DDEF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Lotion Blue#15F2FDΔE 8.65 Dark Turquoise#00CED1ΔE 9.7 Robin Egg Blue#00CCCCΔE 11.47 Medium Turquoise#48D1CCΔE 13.73 Electric Blue#7DF9FFΔE 14.42 Sky Blue (Crayola)#76D7EAΔE 14.89

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

#15DDEF Channel Values

How #15DDEF 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 221 · B 239	8-bit channels as sent to the display
HSL	H 185° · S 87% · L 51%	Easiest model for building lighter and darker variants
HSV	H 185° · S 91% · V 94%	Matches the picker in most design tools
CMYK	C 91% · M 8% · Y 0% · K 6%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	1.66:1 vs white · 12.62:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #15DDEF 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 text1.66:1AA normal AA large AAA normal

TextBlack text12.62:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #15DDEF in the contrast checker.

Colors That Go With #15DDEF

Pairings derived from color-wheel relationships. The complementary color sits opposite #15DDEF; 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 #15DDEF

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 #15DDEF.

How #15DDEF 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#15DDEF

Protanopia#CCCCEF

Protanomaly#A2D3EF

Deuteranopia#B9B9F1

Deuteranomaly#94C9F0

Tritanopia#00DFDF

Tritanomaly#00DEE6

Achromatopsia#C9C9C9

Test a full palette in the color blindness simulator.

Using #15DDEF in Code

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

CSS custom property--color-15ddef: #15DDEF;

CSS backgroundbackground-color: #15DDEF;

Tailwind configcolors: { 'color-15ddef': '#15DDEF' }

SwiftUIColor(red: 0.082, green: 0.867, blue: 0.937)

Android XML<color name="color_15ddef">#15DDEF</color>

SVG fillfill="#15DDEF"

More Teal Colors

#15DDEF sits in the teal family. These are its neighbours across that family's full range, each with its own breakdown.

002424 f5ffff 002a38 f0ffff 002d2e eefbfb 003333 ecfeff 003542 ecf7f9 003838 ebffff 006466 009999 00ebeb 0d1616 192929 24fbff 36747d 50bfe6 73a9c2 8dd9cc aec6cf ccffff

#15DDEF Frequently Asked Questions

What color is #15DDEF?

#15DDEF is a mid-tone teal — rgb(21, 221, 239) in RGB and hsl(185, 87%, 51%) in HSL. It carries no registered color name of its own; the closest named color is Lotion Blue (#15F2FD), which is clearly related but distinguishable side by side at a CIE76 distance of 8.65.

What is the RGB value of #15DDEF?

#15DDEF is rgb(21, 221, 239) — red 21, green 221, and blue 239 on the 0-255 scale.

What is the CMYK value of #15DDEF?

#15DDEF converts to approximately cmyk(91%, 8%, 0%, 6%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #15DDEF be black or white?

Black text is the more readable choice. #15DDEF scores 1.66:1 against white and 12.62:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #15DDEF as a CSS color keyword?

No. #15DDEF 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 darkturquoise (#00CED1) at a CIE76 distance of 9.7, which is clearly related but distinguishable side by side.

Open #15DDEF 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 teal in the color library, the guide to shades of teal, or the full color library.