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Recognised as Colour

#31D18F

  • #31D18F
  • Cyan
  • Dark
  • Nearest: Medium seagreen

#31D18F is a cyan with RGB values 49, 209, 143 and HSL 155°, 63%, 51%. It is a dark colour, so black text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#31D18F#31D18F
HEX#31D18F
RGBrgb(49, 209, 143)
RGB (0–1)0.1922, 0.8196, 0.5608
RGB percentages19.2%, 82%, 56.1%
HSLhsl(155.3, 63.5%, 50.6%)
HSV / HSBhsv(155.3, 76.6%, 82%)
CMYK76.6%, 0%, 31.6%, 18%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,264,911
CSS custom property--colour: #31D18F;

Brightness & contrast

Relative luminance0.48237WCAG 2.x, 0 is black and 1 is white
Perceived brightness169.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.65:1
Contrast with white1.97:1WCAG normal text: Fail
Contrast with black10.65:1WCAG normal text: AAA
Greyscale equivalent#AAAAAA
Inverted#CE2E70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CEC18Bno red cones; affects about 1% of men; ΔE 52.5 from the original
Deuteranopia#BBB393no green cones; the most common form, about 1% of men; ΔE 53.2 from the original
Tritanopia#00D0C0no blue cones; rare, and affects men and women equally; ΔE 27.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.97:1WCAG large text: Fail
Contrast with black, large text10.65:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 12.4Light green · ΔE 21.4Medium aquamarine · ΔE 21.6Medium spring green · ΔE 22.5Aquamarine · ΔE 23Pale green · ΔE 24.3
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 12.41, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D13173
Analogous#31D13F, #31C3D1
Triadic#8F31D1, #D18F31
Split complementary#D131C3, #D13F31
Tetradic#3F31D1, #D13173, #C3D131

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8F6EA
Lighter +30%#AEEDD3
Lighter +20%#84E4BC
Lighter +10%#5BDAA6
Darker −10%#26A973
Darker −20%#1C8057
Darker −30%#13563A
Darker −40%#0A2C1E
More saturated +25%#11F195
Less saturated −25%#51B289

Channel breakdown

R49
G209
B143
Red49 (19.2%)
Green209 (82%)
Blue143 (56.1%)
Hue155.25°
Saturation (HSL)63.49%
Lightness50.59%
Dominant channelGreen
Hex per channelR 31 · G D1 · B 8F

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Every value on this page was computed from “31d18f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.