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Recognised as Colour

#21BB5E

  • #21BB5E
  • Green
  • Dark
  • Nearest: Medium seagreen

#21BB5E is a green with RGB values 33, 187, 94 and HSL 144°, 70%, 43%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#21BB5E#21BB5E
HEX#21BB5E
RGBrgb(33, 187, 94)
RGB (0–1)0.1294, 0.7333, 0.3686
RGB percentages12.9%, 73.3%, 36.9%
HSLhsl(143.8, 70%, 43.1%)
HSV / HSBhsv(143.8, 82.4%, 73.3%)
CMYK82.4%, 0%, 49.7%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,210,654
CSS custom property--colour: #21BB5E;

Brightness & contrast

Relative luminance0.36672WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.33:1
Contrast with white2.52:1WCAG normal text: Fail
Contrast with black8.33:1WCAG normal text: AAA
Greyscale equivalent#949494
Inverted#DE44A1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BCAA56no red cones; affects about 1% of men; ΔE 54.9 from the original
Deuteranopia#AB9E65no green cones; the most common form, about 1% of men; ΔE 55.1 from the original
Tritanopia#00B8A5no blue cones; rare, and affects men and women equally; ΔE 40.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.52:1WCAG large text: Fail
Contrast with black, large text8.33:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 15.9Forest green · ΔE 20.6Light green · ΔE 23Medium spring green · ΔE 24Green · ΔE 25.7Pale green · ΔE 25.9
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 15.89, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB217E
Analogous#31BB21, #21BBAB
Triadic#5E21BB, #BB5E21
Split complementary#AB21BB, #BB2131
Tetradic#2131BB, #BB217E, #BBAB21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B6F2CE
Lighter +30%#8BEAB1
Lighter +20%#5FE393
Lighter +10%#34DB76
Darker −10%#199048
Darker −20%#126432
Darker −30%#0A391D
Darker −40%#020E07
More saturated +25%#06D658
Less saturated −25%#3DA064

Channel breakdown

R33
G187
B94
Red33 (12.9%)
Green187 (73.3%)
Blue94 (36.9%)
Hue143.77°
Saturation (HSL)70%
Lightness43.14%
Dominant channelGreen
Hex per channelR 21 · G BB · B 5E

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Every value on this page was computed from “21bb5e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.