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Recognised as Colour

#99D421

  • #99D421
  • Green
  • Light
  • Nearest: Yellow green

#99D421 is a green with RGB values 153, 212, 33 and HSL 80°, 73%, 48%. It is a light colour, so black text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Yellow green.

Colour values

#99D421#99D421
HEX#99D421
RGBrgb(153, 212, 33)
RGB (0–1)0.6, 0.8314, 0.1294
RGB percentages60%, 83.1%, 12.9%
HSLhsl(79.8, 73.1%, 48%)
HSV / HSBhsv(79.8, 84.4%, 83.1%)
CMYK27.8%, 0%, 84.4%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,081,313
CSS custom property--colour: #99D421;

Brightness & contrast

Relative luminance0.53969WCAG 2.x, 0 is black and 1 is white
Perceived brightness183 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.79:1
Contrast with white1.78:1WCAG normal text: Fail
Contrast with black11.79:1WCAG normal text: AAA
Greyscale equivalent#BBBBBB
Inverted#662BDE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#DFC500no red cones; affects about 1% of men; ΔE 36.5 from the original
Deuteranopia#D7C138no green cones; the most common form, about 1% of men; ΔE 35.9 from the original
Tritanopia#9FCAB5no blue cones; rare, and affects men and women equally; ΔE 71.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.78:1WCAG large text: Fail
Contrast with black, large text11.79:1WCAG large text: AAA

Named colours

Yellow green · ΔE 7.8Green yellow · ΔE 19.2Limegreen · ΔE 28.1Lawn green · ΔE 30.3Chartreuse · ΔE 31.1Yellow · ΔE 35.2
Nearest named CSS colourYellow green (#9ACD32)ΔE 7.78, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C21D4
Analogous#D4B521, #40D421
Triadic#2199D4, #D42199
Split complementary#213FD4, #B621D4
Tetradic#21D4B6, #5C21D4, #D4213F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E8F7CA
Lighter +30%#D5F09E
Lighter +20%#C2E972
Lighter +10%#AFE246
Darker −10%#79A81A
Darker −20%#597C13
Darker −30%#39500C
Darker −40%#1A2306
More saturated +25%#A3F302
Less saturated −25%#8FB540

Channel breakdown

R153
G212
B33
Red153 (60%)
Green212 (83.1%)
Blue33 (12.9%)
Hue79.78°
Saturation (HSL)73.06%
Lightness48.04%
Dominant channelGreen
Hex per channelR 99 · G D4 · B 21

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Every value on this page was computed from “99d421” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.