Skip to content

#57CBB0 Color

#57CBB0 is rgb(87, 203, 176) in RGB, hsl(166, 53%, 57%) in HSL, and about cmyk(57%, 0%, 13%, 20%) 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 5.04. Black text is the more readable choice on this background.

#57CBB0
HEX#57CBB0
RGBrgb(87, 203, 176)
HSLhsl(166, 53%, 57%)
HSVhsv(166, 57%, 80%)
CMYKcmyk(57%, 0%, 13%, 20%)
OKLCHoklch(76.8% 0.113 175.4)
LABlab(74.55% -39.27 3.13)
LCHlch(74.55% 39.39 175.44)

What #57CBB0 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 #57CBB0, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Aquamarine#66CDAAΔE 5.04Keppel#3AB09EΔE 10.47Pearl Aqua#88D8C0ΔE 11.38Turquoise#40E0D0ΔE 11.69Mountain Meadow#30BA8FΔE 12.18Medium Turquoise#48D1CCΔE 12.27

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

#57CBB0 Channel Values

How #57CBB0 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 87 · G 203 · B 1768-bit channels as sent to the display
HSLH 166° · S 53% · L 57%Easiest model for building lighter and darker variants
HSVH 166° · S 57% · V 80%Matches the picker in most design tools
CMYKC 57% · M 0% · Y 13% · K 20%Approximate ink mix; confirm with an ICC profile before printing
Luminance1.99:1 vs white · 10.57:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #57CBB0 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 text1.99:1AA normal AA large AAA normal
TextBlack text10.57:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #57CBB0 in the contrast checker.

Colors That Go With #57CBB0

Pairings derived from color-wheel relationships. The complementary color sits opposite #57CBB0; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#57CBB0
Complementary
#CB5772
Analogous
#57CB76
Analogous
#57ACCB
Triadic
#B057CB
Triadic
#CBB057
Split comp.
#CB57AC
Split comp.
#CB7657

Tints & Shades of #57CBB0

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

#6FD3BB
#86DAC6
#9DE1D1
#B1E7DA
#C8EEE5
#E0F5F0

Shades

#3BBFA0
#32A489
#29856F
#206958
#174A3E
#0E2F27

Want a full 50-950 ramp with semantic roles? Generate design tokens from #57CBB0.

How #57CBB0 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#57CBB0
Protanopia#BDBDB0
Protanomaly#9FC3B0
Deuteranopia#AFAFB3
Deuteranomaly#94BBB2
Tritanopia#60C8C8
Tritanomaly#5CC9BF
Achromatopsia#B8B8B8

Test a full palette in the color blindness simulator.

Using #57CBB0 in Code

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

CSS custom property--color-57cbb0: #57CBB0;
CSS backgroundbackground-color: #57CBB0;
Tailwind configcolors: { 'color-57cbb0': '#57CBB0' }
SwiftUIColor(red: 0.341, green: 0.796, blue: 0.690)
Android XML<color name="color_57cbb0">#57CBB0</color>
SVG fillfill="#57CBB0"

More Green Colors

#57CBB0 sits in the green family. These are its neighbours across that family's full range, each with its own breakdown.

000200fdfff5001f00f7fee7002400f7fbf5002c22f5fffa002e00f5fff5003300f0fff000800000db870d542b20483f33cc6646c3995ea50072863991e0b7a3f5d8bcd7bcd1ffed

#57CBB0 Frequently Asked Questions

What color is #57CBB0?

#57CBB0 is a mid-tone green — rgb(87, 203, 176) in RGB and hsl(166, 53%, 57%) 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 5.04.

What is the RGB value of #57CBB0?

#57CBB0 is rgb(87, 203, 176) — red 87, green 203, and blue 176 on the 0-255 scale.

What is the CMYK value of #57CBB0?

#57CBB0 converts to approximately cmyk(57%, 0%, 13%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #57CBB0 be black or white?

Black text is the more readable choice. #57CBB0 scores 1.99:1 against white and 10.57:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #57CBB0 as a CSS color keyword?

No. #57CBB0 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 5.04, which is clearly related but distinguishable side by side.

Open #57CBB0 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.