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Colour

#18B4B2

  • #18B4B2
  • Cyan
  • Dark
  • Nearest: Light seagreen

#18B4B2 is a cyan with RGB values 24, 180, 178 and HSL 179°, 76%, 40%. It is a dark colour, so black text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#18B4B2#18B4B2
HEX#18B4B2
RGBrgb(24, 180, 178)
RGB (0–1)0.0941, 0.7059, 0.698
RGB percentages9.4%, 70.6%, 69.8%
HSLhsl(179.2, 76.5%, 40%)
HSV / HSBhsv(179.2, 86.7%, 70.6%)
CMYK86.7%, 0%, 1.1%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,619,122
CSS custom property--colour: #18B4B2;

Brightness & contrast

Relative luminance0.36051WCAG 2.x, 0 is black and 1 is white
Perceived brightness151 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.21:1
Contrast with white2.56:1WCAG normal text: Fail
Contrast with black8.21:1WCAG normal text: AAA
Greyscale equivalent#939393
Inverted#E74B4D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A8AAB2no red cones; affects about 1% of men; ΔE 38 from the original
Deuteranopia#949CB3no green cones; the most common form, about 1% of men; ΔE 38.9 from the original
Tritanopia#00BAB3no blue cones; rare, and affects men and women equally; ΔE 4.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.56:1WCAG large text: Fail
Contrast with black, large text8.21:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 3.5Dark turquoise · ΔE 10.1Medium turquoise · ΔE 10.4Dark cyan · ΔE 15.6Turquoise · ΔE 17.4Cadetblue · ΔE 17.9
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 3.5, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B4181A
Analogous#18B464, #1868B4
Triadic#B218B4, #B4B218
Split complementary#B41868, #B46418
Tetradic#6418B4, #B4181A, #68B418

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A5F3F2
Lighter +30%#78EDEC
Lighter +20%#4BE7E5
Lighter +10%#1EE1DF
Darker −10%#128786
Darker −20%#0C5A59
Darker −30%#062D2D
Darker −40%#000000
More saturated +25%#00CCC9
Less saturated −25%#319B99

Channel breakdown

R24
G180
B178
Red24 (9.4%)
Green180 (70.6%)
Blue178 (69.8%)
Hue179.23°
Saturation (HSL)76.47%
Lightness40%
Dominant channelGreen
Hex per channelR 18 · G B4 · B B2

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Every value on this page was computed from “18b4b2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.