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Recognised as Colour

#1B8A21

  • #1B8A21
  • Green
  • Dark
  • Nearest: Forest green

#1B8A21 is a green with RGB values 27, 138, 33 and HSL 123°, 67%, 32%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Forest green.

Colour values

#1B8A21#1B8A21
HEX#1B8A21
RGBrgb(27, 138, 33)
RGB (0–1)0.1059, 0.5412, 0.1294
RGB percentages10.6%, 54.1%, 12.9%
HSLhsl(123.2, 67.3%, 32.4%)
HSV / HSBhsv(123.2, 80.4%, 54.1%)
CMYK80.4%, 0%, 76.1%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,804,833
CSS custom property--colour: #1B8A21;

Brightness & contrast

Relative luminance0.1852WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.7:1
Contrast with white4.46:1WCAG normal text: Fail
Contrast with black4.7:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#E475DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8D7C0Cno red cones; affects about 1% of men; ΔE 47.2 from the original
Deuteranopia#81742Cno green cones; the most common form, about 1% of men; ΔE 46.5 from the original
Tritanopia#008676no blue cones; rare, and affects men and women equally; ΔE 47.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.46:1WCAG large text: AA
Contrast with black, large text4.7:1WCAG large text: AAA

Named colours

Forest green · ΔE 1Green · ΔE 6.5Dark green · ΔE 15.9Olivedrab · ΔE 23.2Medium seagreen · ΔE 25.7Sea green · ΔE 27.1
Nearest named CSS colourForest green (#228B22)ΔE 0.97, indistinguishable to the eye
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A1B84
Analogous#4D8A1B, #1B8A58
Triadic#211B8A, #8A211B
Split complementary#581B8A, #8A1B4D
Tetradic#1B4D8A, #8A1B84, #8A581B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#89E88E
Lighter +30%#5EE065
Lighter +20%#34D73D
Lighter +10%#23B52B
Darker −10%#135F17
Darker −20%#0A350D
Darker −30%#020A02
Darker −40%#000000
More saturated +25%#069F0F
Less saturated −25%#307533

Channel breakdown

R27
G138
B33
Red27 (10.6%)
Green138 (54.1%)
Blue33 (12.9%)
Hue123.24°
Saturation (HSL)67.27%
Lightness32.35%
Dominant channelGreen
Hex per channelR 1B · G 8A · B 21

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Every value on this page was computed from “1b8a21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.