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Colour

#18B8A5

  • #18B8A5
  • Cyan
  • Dark
  • Nearest: Light seagreen

#18B8A5 is a cyan with RGB values 24, 184, 165 and HSL 173°, 77%, 41%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#18B8A5#18B8A5
HEX#18B8A5
RGBrgb(24, 184, 165)
RGB (0–1)0.0941, 0.7216, 0.6471
RGB percentages9.4%, 72.2%, 64.7%
HSLhsl(172.9, 76.9%, 40.8%)
HSV / HSBhsv(172.9, 87%, 72.2%)
CMYK87%, 0%, 10.3%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,620,133
CSS custom property--colour: #18B8A5;

Brightness & contrast

Relative luminance0.37192WCAG 2.x, 0 is black and 1 is white
Perceived brightness152.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.44:1
Contrast with white2.49:1WCAG normal text: Fail
Contrast with black8.44:1WCAG normal text: AAA
Greyscale equivalent#959595
Inverted#E7475A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AFADA4no red cones; affects about 1% of men; ΔE 41.8 from the original
Deuteranopia#9B9EA7no green cones; the most common form, about 1% of men; ΔE 43.2 from the original
Tritanopia#00BCB2no blue cones; rare, and affects men and women equally; ΔE 5.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.49:1WCAG large text: Fail
Contrast with black, large text8.44:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 7.2Medium turquoise · ΔE 12.8Medium aquamarine · ΔE 13.2Turquoise · ΔE 14.3Dark turquoise · ΔE 14.8Dark cyan · ΔE 20.7
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 7.16, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B8182B
Analogous#18B855, #187BB8
Triadic#A518B8, #B8A518
Split complementary#B8187B, #B85518
Tetradic#5518B8, #B8182B, #7BB818

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8F4EB
Lighter +30%#7BEEE0
Lighter +20%#4EE8D6
Lighter +10%#21E2CB
Darker −10%#128B7D
Darker −20%#0C5E54
Darker −30%#06312C
Darker −40%#000403
More saturated +25%#00D0B7
Less saturated −25%#329E91

Channel breakdown

R24
G184
B165
Red24 (9.4%)
Green184 (72.2%)
Blue165 (64.7%)
Hue172.88°
Saturation (HSL)76.92%
Lightness40.78%
Dominant channelGreen
Hex per channelR 18 · G B8 · B A5

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Every value on this page was computed from “18b8a5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.