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Recognised as Colour

#21FDAE

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

#21FDAE is a cyan with RGB values 33, 253, 174 and HSL 158°, 98%, 56%. It is a light colour, so black text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Medium spring green.

Colour values

#21FDAE#21FDAE
HEX#21FDAE
RGBrgb(33, 253, 174)
RGB (0–1)0.1294, 0.9922, 0.6824
RGB percentages12.9%, 99.2%, 68.2%
HSLhsl(158.5, 98.2%, 56.1%)
HSV / HSBhsv(158.5, 87%, 99.2%)
CMYK87%, 0%, 31.2%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,227,630
CSS custom property--colour: #21FDAE;

Brightness & contrast

Relative luminance0.7363WCAG 2.x, 0 is black and 1 is white
Perceived brightness203.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 15.73:1
Contrast with white1.34:1WCAG normal text: Fail
Contrast with black15.73:1WCAG normal text: AAA
Greyscale equivalent#C9C9C9
Inverted#DE0251

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#F9E9A9no red cones; affects about 1% of men; ΔE 63.4 from the original
Deuteranopia#E1D8B3no green cones; the most common form, about 1% of men; ΔE 63.9 from the original
Tritanopia#00FCE8no blue cones; rare, and affects men and women equally; ΔE 31.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.34:1WCAG large text: Fail
Contrast with black, large text15.73:1WCAG large text: AAA

Named colours

Medium spring green · ΔE 9.3Pale green · ΔE 23.2Light green · ΔE 23.9Spring green · ΔE 25Aquamarine · ΔE 25.8Medium seagreen · ΔE 29.8
Nearest named CSS colourMedium spring green (#00FA9A)ΔE 9.28, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FD2170
Analogous#21FD40, #21DEFD
Triadic#AE21FD, #FDAE21
Split complementary#FD21DE, #FD4021
Tetradic#4021FD, #FD2170, #DEFD21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBFFF8
Lighter +30%#B9FEE5
Lighter +20%#86FED3
Lighter +10%#54FDC0
Darker −10%#02E996
Darker −20%#02B675
Darker −30%#018455
Darker −40%#015134
More saturated +25%#1FFFAF
Less saturated −25%#3DE1A6

Channel breakdown

R33
G253
B174
Red33 (12.9%)
Green253 (99.2%)
Blue174 (68.2%)
Hue158.45°
Saturation (HSL)98.21%
Lightness56.08%
Dominant channelGreen
Hex per channelR 21 · G FD · B AE

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