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Recognised as Colour

#21A404

  • #21A404
  • Green
  • Dark
  • Nearest: Limegreen

#21A404 is a green with RGB values 33, 164, 4 and HSL 109°, 95%, 33%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Limegreen.

Colour values

#21A404#21A404
HEX#21A404
RGBrgb(33, 164, 4)
RGB (0–1)0.1294, 0.6431, 0.0157
RGB percentages12.9%, 64.3%, 1.6%
HSLhsl(109.1, 95.2%, 32.9%)
HSV / HSBhsv(109.1, 97.6%, 64.3%)
CMYK79.9%, 0%, 97.6%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,204,676
CSS custom property--colour: #21A404;

Brightness & contrast

Relative luminance0.26883WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.38:1
Contrast with white3.29:1WCAG normal text: Fail
Contrast with black6.38:1WCAG normal text: AA
Greyscale equivalent#7D7D7D
Inverted#DE5BFB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A89300no red cones; affects about 1% of men; ΔE 54.7 from the original
Deuteranopia#9A8A23no green cones; the most common form, about 1% of men; ΔE 54.1 from the original
Tritanopia#009F8Bno blue cones; rare, and affects men and women equally; ΔE 62.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.29:1WCAG large text: AA
Contrast with black, large text6.38:1WCAG large text: AAA

Named colours

Limegreen · ΔE 16Green · ΔE 17.6Forest green · ΔE 19.3Yellow green · ΔE 28.4Olivedrab · ΔE 32.7Dark green · ΔE 32.8
Nearest named CSS colourLimegreen (#32CD32)ΔE 16.02, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8704A4
Analogous#71A404, #04A437
Triadic#0421A4, #A40421
Split complementary#3704A4, #A40471
Tetradic#0471A4, #8704A4, #A43704

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90FC78
Lighter +30%#67FB47
Lighter +20%#3EF915
Lighter +10%#2BD605
Darker −10%#177203
Darker −20%#0D4002
Darker −30%#030F00
Darker −40%#000000
More saturated +25%#1EA800
Less saturated −25%#2E8F19

Channel breakdown

R33
G164
B4
Red33 (12.9%)
Green164 (64.3%)
Blue4 (1.6%)
Hue109.13°
Saturation (HSL)95.24%
Lightness32.94%
Dominant channelGreen
Hex per channelR 21 · G A4 · B 04

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Every value on this page was computed from “21a404” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.