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Recognised as Colour

#51BFB1

  • #51BFB1
  • Cyan
  • Dark
  • Nearest: Light seagreen

#51BFB1 is a cyan with RGB values 81, 191, 177 and HSL 172°, 46%, 53%. It is a dark colour, so black text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#51BFB1#51BFB1
HEX#51BFB1
RGBrgb(81, 191, 177)
RGB (0–1)0.3176, 0.749, 0.6941
RGB percentages31.8%, 74.9%, 69.4%
HSLhsl(172.4, 46.2%, 53.3%)
HSV / HSBhsv(172.4, 57.6%, 74.9%)
CMYK57.6%, 0%, 7.3%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,357,489
CSS custom property--colour: #51BFB1;

Brightness & contrast

Relative luminance0.42185WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.44:1
Contrast with white2.23:1WCAG normal text: Fail
Contrast with black9.44:1WCAG normal text: AAA
Greyscale equivalent#A7A7A7
Inverted#AE404E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B7B5B1no red cones; affects about 1% of men; ΔE 35.1 from the original
Deuteranopia#A5A9B2no green cones; the most common form, about 1% of men; ΔE 35.2 from the original
Tritanopia#00C3BBno blue cones; rare, and affects men and women equally; ΔE 8.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.23:1WCAG large text: Fail
Contrast with black, large text9.44:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 7.1Medium turquoise · ΔE 8.8Medium aquamarine · ΔE 12.2Dark turquoise · ΔE 13.1Turquoise · ΔE 14Cadetblue · ΔE 18.7
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 7.11, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BF515F
Analogous#51BF7A, #5196BF
Triadic#B151BF, #BFB151
Split complementary#BF5196, #BF7A51
Tetradic#7A51BF, #BF515F, #96BF51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6F6F4
Lighter +30%#C1E8E3
Lighter +20%#9CDAD2
Lighter +10%#76CDC2
Darker −10%#3BA295
Darker −20%#2E7C72
Darker −30%#205750
Darker −40%#12322E
More saturated +25%#33DDC7
Less saturated −25%#6FA19B

Channel breakdown

R81
G191
B177
Red81 (31.8%)
Green191 (74.9%)
Blue177 (69.4%)
Hue172.36°
Saturation (HSL)46.22%
Lightness53.33%
Dominant channelGreen
Hex per channelR 51 · G BF · B B1

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Every value on this page was computed from “51bfb1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.