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Recognised as Colour

#63B221

  • #63B221
  • Green
  • Dark
  • Nearest: Yellow green

#63B221 is a green with RGB values 99, 178, 33 and HSL 93°, 69%, 41%. It is a dark colour, so black text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Yellow green.

Colour values

#63B221#63B221
HEX#63B221
RGBrgb(99, 178, 33)
RGB (0–1)0.3882, 0.698, 0.1294
RGB percentages38.8%, 69.8%, 12.9%
HSLhsl(92.7, 68.7%, 41.4%)
HSV / HSBhsv(92.7, 81.5%, 69.8%)
CMYK44.4%, 0%, 81.5%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,533,665
CSS custom property--colour: #63B221;

Brightness & contrast

Relative luminance0.34603WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.92:1
Contrast with white2.65:1WCAG normal text: Fail
Contrast with black7.92:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#9C4DDE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B9A300no red cones; affects about 1% of men; ΔE 42.7 from the original
Deuteranopia#AE9D32no green cones; the most common form, about 1% of men; ΔE 41.5 from the original
Tritanopia#61AB98no blue cones; rare, and affects men and women equally; ΔE 60.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.65:1WCAG large text: Fail
Contrast with black, large text7.92:1WCAG large text: AAA

Named colours

Yellow green · ΔE 15.7Limegreen · ΔE 21.3Forest green · ΔE 21.5Green · ΔE 22.3Olivedrab · ΔE 24.2Light green · ΔE 31.5
Nearest named CSS colourYellow green (#9ACD32)ΔE 15.69, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7021B2
Analogous#ACB221, #21B227
Triadic#2163B2, #B22163
Split complementary#2721B2, #B221AC
Tetradic#21ACB2, #7021B2, #B22721

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDF0AF
Lighter +30%#B2E884
Lighter +20%#96E059
Lighter +10%#7BD82E
Darker −10%#4B8719
Darker −20%#335C11
Darker −30%#1B3109
Darker −40%#030601
More saturated +25%#61CC07
Less saturated −25%#65983B

Channel breakdown

R99
G178
B33
Red99 (38.8%)
Green178 (69.8%)
Blue33 (12.9%)
Hue92.69°
Saturation (HSL)68.72%
Lightness41.37%
Dominant channelGreen
Hex per channelR 63 · G B2 · B 21

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Every value on this page was computed from “63b221” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.