Recognised as Colour

#21D4BE

#21D4BE
Cyan
Light
Nearest: Turquoise

#21D4BE is a cyan with RGB values 33, 212, 190 and HSL 173°, 73%, 48%. It is a light colour, so black text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Turquoise.

Colour values

#21D4BE#21D4BE

HEX#21D4BE

RGBrgb(33, 212, 190)

RGB (0–1)0.1294, 0.8314, 0.7451

RGB percentages12.9%, 83.1%, 74.5%

HSLhsl(172.6, 73.1%, 48%)

HSV / HSBhsv(172.6, 84.4%, 83.1%)

CMYK84.4%, 0%, 10.4%, 16.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,217,150

CSS custom property--colour: #21D4BE;

Brightness & contrast

Relative luminance0.51128WCAG 2.x, 0 is black and 1 is white

Perceived brightness175.6 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 11.23:1

Contrast with white1.87:1WCAG normal text: Fail

Contrast with black11.23:1WCAG normal text: AAA

Greyscale equivalent#ACACAC

Inverted#DE2B41

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#CAC7BDno red cones; affects about 1% of men; ΔE 46.6 from the original

Deuteranopia#B4B7C0no green cones; the most common form, about 1% of men; ΔE 47.7 from the original

Tritanopia#00D8CDno blue cones; rare, and affects men and women equally; ΔE 6.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text1.87:1WCAG large text: Fail

Contrast with black, large text11.23:1WCAG large text: AAA

Named colours

Turquoise · ΔE 6 Medium turquoise · ΔE 11.9 Medium aquamarine · ΔE 12.7 Dark turquoise · ΔE 14.2 Light seagreen · ΔE 15.3 Aquamarine · ΔE 18.8

Nearest named CSS colourTurquoise (#40E0D0)ΔE 6.01, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#D42137

Analogous#21D464, #2191D4

Triadic#BE21D4, #D4BE21

Split complementary#D42191, #D46421

Tetradic#6421D4, #D42137, #91D421

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#CAF7F1

Lighter +30%#9EF0E6

Lighter +20%#72E9DA

Lighter +10%#46E2CF

Darker −10%#1AA896

Darker −20%#137C6F

Darker −30%#0C5047

Darker −40%#062320

More saturated +25%#02F3D5

Less saturated −25%#40B5A7

Channel breakdown

R33

G212

B190

Red33 (12.9%)

Green212 (83.1%)

Blue190 (74.5%)

Hue172.63°

Saturation (HSL)73.06%

Lightness48.04%

Dominant channelGreen

Hex per channelR 21 · G D4 · B BE

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#21D4BE

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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