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Recognised as Colour

#51BCBB

  • #51BCBB
  • Cyan
  • Dark
  • Nearest: Light seagreen

#51BCBB is a cyan with RGB values 81, 188, 187 and HSL 179°, 44%, 53%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#51BCBB#51BCBB
HEX#51BCBB
RGBrgb(81, 188, 187)
RGB (0–1)0.3176, 0.7373, 0.7333
RGB percentages31.8%, 73.7%, 73.3%
HSLhsl(179.4, 44.4%, 52.7%)
HSV / HSBhsv(179.4, 56.9%, 73.7%)
CMYK56.9%, 0%, 0.5%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,356,731
CSS custom property--colour: #51BCBB;

Brightness & contrast

Relative luminance0.41304WCAG 2.x, 0 is black and 1 is white
Perceived brightness163.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.26:1
Contrast with white2.27:1WCAG normal text: Fail
Contrast with black9.26:1WCAG normal text: AAA
Greyscale equivalent#A5A5A5
Inverted#AE4344

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B1B4BBno red cones; affects about 1% of men; ΔE 31.4 from the original
Deuteranopia#A0A7BCno green cones; the most common form, about 1% of men; ΔE 32.7 from the original
Tritanopia#00C1BBno blue cones; rare, and affects men and women equally; ΔE 10.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.27:1WCAG large text: Fail
Contrast with black, large text9.26:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 8.6Medium turquoise · ΔE 9.4Dark turquoise · ΔE 11.6Cadetblue · ΔE 14.4Turquoise · ΔE 17.9Dark cyan · ΔE 18.2
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 8.63, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC5152
Analogous#51BC85, #5188BC
Triadic#BB51BC, #BCBB51
Split complementary#BC5188, #BC8551
Tetradic#8551BC, #BC5152, #88BC51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F5F5
Lighter +30%#BFE7E6
Lighter +20%#9BD8D8
Lighter +10%#76CAC9
Darker −10%#3D9D9C
Darker −20%#2E7978
Darker −30%#205453
Darker −40%#122F2F
More saturated +25%#33DAD9
Less saturated −25%#6F9E9D

Channel breakdown

R81
G188
B187
Red81 (31.8%)
Green188 (73.7%)
Blue187 (73.3%)
Hue179.44°
Saturation (HSL)44.4%
Lightness52.75%
Dominant channelGreen
Hex per channelR 51 · G BC · B BB

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Every value on this page was computed from “51bcbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.