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Colour

#18A38E

  • #18A38E
  • Cyan
  • Dark
  • Nearest: Light seagreen

#18A38E is a cyan with RGB values 24, 163, 142 and HSL 171°, 74%, 37%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Light seagreen.

Colour values

#18A38E#18A38E
HEX#18A38E
RGBrgb(24, 163, 142)
RGB (0–1)0.0941, 0.6392, 0.5569
RGB percentages9.4%, 63.9%, 55.7%
HSLhsl(170.9, 74.3%, 36.7%)
HSV / HSBhsv(170.9, 85.3%, 63.9%)
CMYK85.3%, 0%, 12.9%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,614,734
CSS custom property--colour: #18A38E;

Brightness & contrast

Relative luminance0.28342WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.67:1
Contrast with white3.15:1WCAG normal text: Fail
Contrast with black6.67:1WCAG normal text: AA
Greyscale equivalent#848484
Inverted#E75C71

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9C988Dno red cones; affects about 1% of men; ΔE 39.3 from the original
Deuteranopia#8B8C90no green cones; the most common form, about 1% of men; ΔE 40 from the original
Tritanopia#00A69Dno blue cones; rare, and affects men and women equally; ΔE 7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.15:1WCAG large text: AA
Contrast with black, large text6.67:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 9.5Dark cyan · ΔE 15.6Medium aquamarine · ΔE 17.1Teal · ΔE 18.6Medium turquoise · ΔE 19.3Sea green · ΔE 20.8
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 9.49, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A3182D
Analogous#18A348, #1873A3
Triadic#8E18A3, #A38E18
Split complementary#A31873, #A34818
Tetradic#4818A3, #A3182D, #73A318

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#97F0E2
Lighter +30%#6BE9D6
Lighter +20%#3EE3CA
Lighter +10%#1FCFB5
Darker −10%#117767
Darker −20%#0B4A41
Darker −30%#041E1A
Darker −40%#000000
More saturated +25%#01BA9E
Less saturated −25%#2F8C7E

Channel breakdown

R24
G163
B142
Red24 (9.4%)
Green163 (63.9%)
Blue142 (55.7%)
Hue170.94°
Saturation (HSL)74.33%
Lightness36.67%
Dominant channelGreen
Hex per channelR 18 · G A3 · B 8E

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Every value on this page was computed from “18a38e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.