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Recognised as Colour

#1FBB58

  • #1FBB58
  • Green
  • Dark
  • Nearest: Medium seagreen

#1FBB58 is a green with RGB values 31, 187, 88 and HSL 142°, 72%, 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

#1FBB58#1FBB58
HEX#1FBB58
RGBrgb(31, 187, 88)
RGB (0–1)0.1216, 0.7333, 0.3451
RGB percentages12.2%, 73.3%, 34.5%
HSLhsl(141.9, 71.6%, 42.7%)
HSV / HSBhsv(141.9, 83.4%, 73.3%)
CMYK83.4%, 0%, 52.9%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,079,576
CSS custom property--colour: #1FBB58;

Brightness & contrast

Relative luminance0.36537WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.31:1
Contrast with white2.53:1WCAG normal text: Fail
Contrast with black8.31:1WCAG normal text: AAA
Greyscale equivalent#939393
Inverted#E044A7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BCAA4Fno red cones; affects about 1% of men; ΔE 55.5 from the original
Deuteranopia#AC9E60no green cones; the most common form, about 1% of men; ΔE 56.1 from the original
Tritanopia#00B7A4no blue cones; rare, and affects men and women equally; ΔE 43.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.53:1WCAG large text: Fail
Contrast with black, large text8.31:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 18.8Forest green · ΔE 20Light green · ΔE 23.8Limegreen · ΔE 24.2Medium spring green · ΔE 24.2Green · ΔE 24.6
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 18.79, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB1F82
Analogous#34BB1F, #1FBBA6
Triadic#581FBB, #BB581F
Split complementary#A61FBB, #BB1F34
Tetradic#1F34BB, #BB1F82, #BBA61F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B4F2CB
Lighter +30%#88EBAC
Lighter +20%#5CE48E
Lighter +10%#30DD6F
Darker −10%#188F43
Darker −20%#10642F
Darker −30%#09381A
Darker −40%#020C06
More saturated +25%#04D651
Less saturated −25%#3AA05F

Channel breakdown

R31
G187
B88
Red31 (12.2%)
Green187 (73.3%)
Blue88 (34.5%)
Hue141.92°
Saturation (HSL)71.56%
Lightness42.75%
Dominant channelGreen
Hex per channelR 1F · G BB · B 58

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Every value on this page was computed from “1fbb58” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.