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Recognised as Colour

#55B4AB

  • #55B4AB
  • Cyan
  • Dark
  • Nearest: Light seagreen

#55B4AB is a cyan with RGB values 85, 180, 171 and HSL 174°, 39%, 52%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#55B4AB#55B4AB
HEX#55B4AB
RGBrgb(85, 180, 171)
RGB (0–1)0.3333, 0.7059, 0.6706
RGB percentages33.3%, 70.6%, 67.1%
HSLhsl(174.3, 38.8%, 52%)
HSV / HSBhsv(174.3, 52.8%, 70.6%)
CMYK52.8%, 0%, 5%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,616,811
CSS custom property--colour: #55B4AB;

Brightness & contrast

Relative luminance0.37514WCAG 2.x, 0 is black and 1 is white
Perceived brightness156.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.5:1
Contrast with white2.47:1WCAG normal text: Fail
Contrast with black8.5:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#AA4B54

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ACABABno red cones; affects about 1% of men; ΔE 31 from the original
Deuteranopia#9CA0ACno green cones; the most common form, about 1% of men; ΔE 31.4 from the original
Tritanopia#12B8B1no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.47:1WCAG large text: Fail
Contrast with black, large text8.5:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 7.9Medium turquoise · ΔE 12.4Cadetblue · ΔE 12.9Dark turquoise · ΔE 15.7Dark cyan · ΔE 16.3Medium aquamarine · ΔE 16.8
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 7.87, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B4555E
Analogous#55B47B, #558EB4
Triadic#AB55B4, #B4AB55
Split complementary#B4558E, #B47B55
Tetradic#7B55B4, #B4555E, #8EB455

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E3F2F1
Lighter +30%#BFE3DF
Lighter +20%#9CD3CE
Lighter +10%#78C4BC
Darker −10%#42948D
Darker −20%#32716B
Darker −30%#224E4A
Darker −40%#132A28
More saturated +25%#36D3C4
Less saturated −25%#749592

Channel breakdown

R85
G180
B171
Red85 (33.3%)
Green180 (70.6%)
Blue171 (67.1%)
Hue174.32°
Saturation (HSL)38.78%
Lightness51.96%
Dominant channelGreen
Hex per channelR 55 · G B4 · B AB

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Every value on this page was computed from “55b4ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.