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Recognised as Colour

#21FFB6

  • #21FFB6
  • Cyan
  • Light
  • Nearest: Medium spring green

#21FFB6 is a cyan with RGB values 33, 255, 182 and HSL 160°, 100%, 56%. It is a light colour, so black text on it reaches 16:1 contrast (AAA for normal text). The nearest named colour is Medium spring green.

Colour values

#21FFB6#21FFB6
HEX#21FFB6
RGBrgb(33, 255, 182)
RGB (0–1)0.1294, 1, 0.7137
RGB percentages12.9%, 100%, 71.4%
HSLhsl(160.3, 100%, 56.5%)
HSV / HSBhsv(160.3, 87.1%, 100%)
CMYK87.1%, 0%, 28.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,228,150
CSS custom property--colour: #21FFB6;

Brightness & contrast

Relative luminance0.75221WCAG 2.x, 0 is black and 1 is white
Perceived brightness205.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.04:1
Contrast with white1.31:1WCAG normal text: Fail
Contrast with black16.04:1WCAG normal text: AAA
Greyscale equivalent#CBCBCB
Inverted#DE0049

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FAEBB2no red cones; affects about 1% of men; ΔE 62.8 from the original
Deuteranopia#E2DABBno green cones; the most common form, about 1% of men; ΔE 63.5 from the original
Tritanopia#00FFEBno blue cones; rare, and affects men and women equally; ΔE 28.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.31:1WCAG large text: Fail
Contrast with black, large text16.04:1WCAG large text: AAA

Named colours

Medium spring green · ΔE 12.5Aquamarine · ΔE 23.2Pale green · ΔE 24.4Light green · ΔE 25Spring green · ΔE 28.2Medium seagreen · ΔE 29.9
Nearest named CSS colourMedium spring green (#00FA9A)ΔE 12.52, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF216A
Analogous#21FF47, #21D9FF
Triadic#B621FF, #FFB621
Split complementary#FF21D9, #FF4721
Tetradic#4721FF, #FF216A, #D9FF21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDFFF9
Lighter +30%#BAFFE8
Lighter +20%#87FFD8
Lighter +10%#54FFC7
Darker −10%#00ED9F
Darker −20%#00BA7D
Darker −30%#00875B
Darker −40%#005438
More saturated +25%#21FFB6
Less saturated −25%#3DE3AC

Channel breakdown

R33
G255
B182
Red33 (12.9%)
Green255 (100%)
Blue182 (71.4%)
Hue160.27°
Saturation (HSL)100%
Lightness56.47%
Dominant channelGreen
Hex per channelR 21 · G FF · B B6

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Every value on this page was computed from “21ffb6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.