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Recognised as Colour

#1BB5AF

  • #1BB5AF
  • Cyan
  • Dark
  • Nearest: Light seagreen

#1BB5AF is a cyan with RGB values 27, 181, 175 and HSL 178°, 74%, 41%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#1BB5AF#1BB5AF
HEX#1BB5AF
RGBrgb(27, 181, 175)
RGB (0–1)0.1059, 0.7098, 0.6863
RGB percentages10.6%, 71%, 68.6%
HSLhsl(177.7, 74%, 40.8%)
HSV / HSBhsv(177.7, 85.1%, 71%)
CMYK85.1%, 0%, 3.3%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,815,983
CSS custom property--colour: #1BB5AF;

Brightness & contrast

Relative luminance0.36376WCAG 2.x, 0 is black and 1 is white
Perceived brightness151.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.28:1
Contrast with white2.54:1WCAG normal text: Fail
Contrast with black8.28:1WCAG normal text: AAA
Greyscale equivalent#949494
Inverted#E44A50

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AAABAFno red cones; affects about 1% of men; ΔE 38.7 from the original
Deuteranopia#969CB0no green cones; the most common form, about 1% of men; ΔE 40 from the original
Tritanopia#00BAB3no blue cones; rare, and affects men and women equally; ΔE 2.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.54:1WCAG large text: Fail
Contrast with black, large text8.28:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 1.6Medium turquoise · ΔE 10.1Dark turquoise · ΔE 10.6Turquoise · ΔE 16.2Dark cyan · ΔE 16.3Medium aquamarine · ΔE 18.2
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 1.65, below the just-noticeable difference
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B51B21
Analogous#1BB562, #1B6EB5
Triadic#AF1BB5, #B5AF1B
Split complementary#B51B6E, #B5621B
Tetradic#621BB5, #B51B21, #6EB51B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AAF2EF
Lighter +30%#7DECE7
Lighter +20%#51E5DF
Lighter +10%#25DED7
Darker −10%#148984
Darker −20%#0E5C59
Darker −30%#07302E
Darker −40%#010303
More saturated +25%#01CFC7
Less saturated −25%#359B97

Channel breakdown

R27
G181
B175
Red27 (10.6%)
Green181 (71%)
Blue175 (68.6%)
Hue177.66°
Saturation (HSL)74.04%
Lightness40.78%
Dominant channelGreen
Hex per channelR 1B · G B5 · B AF

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Every value on this page was computed from “1bb5af” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.