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Recognised as Colour

#21F89B

  • #21F89B
  • Cyan
  • Light
  • Nearest: Medium spring green

#21F89B is a cyan with RGB values 33, 248, 155 and HSL 154°, 94%, 55%. It is a light colour, so black text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Medium spring green.

Colour values

#21F89B#21F89B
HEX#21F89B
RGBrgb(33, 248, 155)
RGB (0–1)0.1294, 0.9725, 0.6078
RGB percentages12.9%, 97.3%, 60.8%
HSLhsl(154, 93.9%, 55.1%)
HSV / HSBhsv(154, 86.7%, 97.3%)
CMYK86.7%, 0%, 37.5%, 2.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,226,331
CSS custom property--colour: #21F89B;

Brightness & contrast

Relative luminance0.69825WCAG 2.x, 0 is black and 1 is white
Perceived brightness197.9 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 14.96:1
Contrast with white1.4:1WCAG normal text: Fail
Contrast with black14.96:1WCAG normal text: AAA
Greyscale equivalent#C4C4C4
Inverted#DE0764

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#F6E495no red cones; affects about 1% of men; ΔE 64.6 from the original
Deuteranopia#DFD3A1no green cones; the most common form, about 1% of men; ΔE 65.3 from the original
Tritanopia#00F6E0no blue cones; rare, and affects men and women equally; ΔE 37.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.4:1WCAG large text: Fail
Contrast with black, large text14.96:1WCAG large text: AAA

Named colours

Medium spring green · ΔE 2.4Spring green · ΔE 17.8Pale green · ΔE 21.8Light green · ΔE 22.9Medium seagreen · ΔE 30.5Aquamarine · ΔE 32
Nearest named CSS colourMedium spring green (#00FA9A)ΔE 2.42, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F8217E
Analogous#21F82F, #21EAF8
Triadic#9B21F8, #F89B21
Split complementary#F821EA, #F82F21
Tetradic#2F21F8, #F8217E, #EAF821

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7FEF4
Lighter +30%#B5FDDE
Lighter +20%#84FBC8
Lighter +10%#52FAB1
Darker −10%#07DF82
Darker −20%#05AE65
Darker −30%#047C48
Darker −40%#024B2B
More saturated +25%#1AFF9C
Less saturated −25%#3EDB97

Channel breakdown

R33
G248
B155
Red33 (12.9%)
Green248 (97.3%)
Blue155 (60.8%)
Hue154.05°
Saturation (HSL)93.89%
Lightness55.1%
Dominant channelGreen
Hex per channelR 21 · G F8 · B 9B

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Every value on this page was computed from “21f89b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.