Colour

#21D48F

#21D48F
Cyan
Dark
Nearest: Medium seagreen

#21D48F is a cyan with RGB values 33, 212, 143 and HSL 157°, 73%, 48%. It is a dark colour, so black text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#21D48F#21D48F

HEX#21D48F

RGBrgb(33, 212, 143)

RGB (0–1)0.1294, 0.8314, 0.5608

RGB percentages12.9%, 83.1%, 56.1%

HSLhsl(156.9, 73.1%, 48%)

HSV / HSBhsv(156.9, 84.4%, 83.1%)

CMYK84.4%, 0%, 32.5%, 16.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,217,103

CSS custom property--colour: #21D48F;

Brightness & contrast

Relative luminance0.49393WCAG 2.x, 0 is black and 1 is white

Perceived brightness170.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 10.88:1

Contrast with white1.93:1WCAG normal text: Fail

Contrast with black10.88:1WCAG normal text: AAA

Greyscale equivalent#A9A9A9

Inverted#DE2B70

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#D1C38Bno red cones; affects about 1% of men; ΔE 55.3 from the original

Deuteranopia#BDB594no green cones; the most common form, about 1% of men; ΔE 55.8 from the original

Tritanopia#00D3C2no blue cones; rare, and affects men and women equally; ΔE 28.7 from the original

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

Contrast with white, large text1.93:1WCAG large text: Fail

Contrast with black, large text10.88:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 14.5 Medium spring green · ΔE 19.8 Light green · ΔE 21.6 Pale green · ΔE 24.1 Aquamarine · ΔE 24.2 Medium aquamarine · ΔE 24.3

Nearest named CSS colourMedium seagreen (#3CB371)ΔE 14.51, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#D42166

Analogous#21D436, #21C0D4

Triadic#8F21D4, #D48F21

Split complementary#D421C0, #D43621

Tetradic#3621D4, #D42166, #C0D421

Tints, shades & saturation

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

Lighter +40%#CAF7E6

Lighter +30%#9EF0D0

Lighter +20%#72E9BB

Lighter +10%#46E2A6

Darker −10%#1AA871

Darker −20%#137C53

Darker −30%#0C5036

Darker −40%#062318

More saturated +25%#02F396

Less saturated −25%#40B588

Channel breakdown

R33

G212

B143

Red33 (12.9%)

Green212 (83.1%)

Blue143 (56.1%)

Hue156.87°

Saturation (HSL)73.06%

Lightness48.04%

Dominant channelGreen

Hex per channelR 21 · G D4 · B 8F

Keep nerding

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#21D48F

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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