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Recognised as Colour

#51B3AD

  • #51B3AD
  • Cyan
  • Dark
  • Nearest: Light seagreen

#51B3AD is a cyan with RGB values 81, 179, 173 and HSL 176°, 39%, 51%. 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

#51B3AD#51B3AD
HEX#51B3AD
RGBrgb(81, 179, 173)
RGB (0–1)0.3176, 0.702, 0.6784
RGB percentages31.8%, 70.2%, 67.8%
HSLhsl(176.3, 39.2%, 51%)
HSV / HSBhsv(176.3, 54.7%, 70.2%)
CMYK54.7%, 0%, 3.4%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,354,413
CSS custom property--colour: #51B3AD;

Brightness & contrast

Relative luminance0.37007WCAG 2.x, 0 is black and 1 is white
Perceived brightness155.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.4:1
Contrast with white2.5:1WCAG normal text: Fail
Contrast with black8.4:1WCAG normal text: AAA
Greyscale equivalent#9E9E9E
Inverted#AE4C52

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AAABADno red cones; affects about 1% of men; ΔE 30.5 from the original
Deuteranopia#9A9FAEno green cones; the most common form, about 1% of men; ΔE 31.5 from the original
Tritanopia#00B7B1no 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 text2.5:1WCAG large text: Fail
Contrast with black, large text8.4:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 7.6Cadetblue · ΔE 12.2Medium turquoise · ΔE 12.4Dark turquoise · ΔE 15Dark cyan · ΔE 15.5Medium aquamarine · ΔE 18.3
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 7.63, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B35157
Analogous#51B37C, #5188B3
Triadic#AD51B3, #B3AD51
Split complementary#B35188, #B37C51
Tetradic#7C51B3, #B35157, #88B351

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFF1F0
Lighter +30%#BBE2DF
Lighter +20%#98D2CE
Lighter +10%#74C3BE
Darker −10%#40918C
Darker −20%#306E6A
Darker −30%#214A48
Darker −40%#112726
More saturated +25%#32D2C8
Less saturated −25%#709492

Channel breakdown

R81
G179
B173
Red81 (31.8%)
Green179 (70.2%)
Blue173 (67.8%)
Hue176.33°
Saturation (HSL)39.2%
Lightness50.98%
Dominant channelGreen
Hex per channelR 51 · G B3 · B AD

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Every value on this page was computed from “51b3ad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.