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Colour

#18B278

  • #18B278
  • Cyan
  • Dark
  • Nearest: Medium seagreen

#18B278 is a cyan with RGB values 24, 178, 120 and HSL 157°, 76%, 40%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#18B278#18B278
HEX#18B278
RGBrgb(24, 178, 120)
RGB (0–1)0.0941, 0.698, 0.4706
RGB percentages9.4%, 69.8%, 47.1%
HSLhsl(157.4, 76.2%, 39.6%)
HSV / HSBhsv(157.4, 86.5%, 69.8%)
CMYK86.5%, 0%, 32.6%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,618,552
CSS custom property--colour: #18B278;

Brightness & contrast

Relative luminance0.33391WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.68:1
Contrast with white2.74:1WCAG normal text: Fail
Contrast with black7.68:1WCAG normal text: AAA
Greyscale equivalent#8D8D8D
Inverted#E74D87

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B0A474no red cones; affects about 1% of men; ΔE 48.7 from the original
Deuteranopia#9E977Cno green cones; the most common form, about 1% of men; ΔE 49.2 from the original
Tritanopia#00B1A3no blue cones; rare, and affects men and women equally; ΔE 25.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.74:1WCAG large text: Fail
Contrast with black, large text7.68:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 5.8Sea green · ΔE 17.2Medium aquamarine · ΔE 20.2Dark seagreen · ΔE 28.3Light green · ΔE 28.6Light seagreen · ΔE 29
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 5.76, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B21852
Analogous#18B22B, #189FB2
Triadic#7818B2, #B27818
Split complementary#B2189F, #B22B18
Tetradic#2B18B2, #B21852, #9FB218

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A3F3D5
Lighter +30%#76EDC0
Lighter +20%#49E7AB
Lighter +10%#1EDF96
Darker −10%#12855A
Darker −20%#0C583B
Darker −30%#062B1D
Darker −40%#000000
More saturated +25%#00CA7E
Less saturated −25%#319972

Channel breakdown

R24
G178
B120
Red24 (9.4%)
Green178 (69.8%)
Blue120 (47.1%)
Hue157.4°
Saturation (HSL)76.24%
Lightness39.61%
Dominant channelGreen
Hex per channelR 18 · G B2 · B 78

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Every value on this page was computed from “18b278” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.