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Recognised as Colour

#51A67D

  • #51A67D
  • Cyan
  • Dark
  • Nearest: Sea green

#51A67D is a cyan with RGB values 81, 166, 125 and HSL 151°, 34%, 48%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Sea green.

Colour values

#51A67D#51A67D
HEX#51A67D
RGBrgb(81, 166, 125)
RGB (0–1)0.3176, 0.651, 0.4902
RGB percentages31.8%, 65.1%, 49%
HSLhsl(151.1, 34.4%, 48.4%)
HSV / HSBhsv(151.1, 51.2%, 65.1%)
CMYK51.2%, 0%, 24.7%, 34.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,351,037
CSS custom property--colour: #51A67D;

Brightness & contrast

Relative luminance0.30502WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.1:1
Contrast with white2.96:1WCAG normal text: Fail
Contrast with black7.1:1WCAG normal text: AAA
Greyscale equivalent#919191
Inverted#AE5982

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A49B7Bno red cones; affects about 1% of men; ΔE 34 from the original
Deuteranopia#979280no green cones; the most common form, about 1% of men; ΔE 34.4 from the original
Tritanopia#36A59Bno blue cones; rare, and affects men and women equally; ΔE 17.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.96:1WCAG large text: Fail
Contrast with black, large text7.1:1WCAG large text: AAA

Named colours

Sea green · ΔE 13.1Medium aquamarine · ΔE 14.8Dark seagreen · ΔE 16.1Medium seagreen · ΔE 16.9Light seagreen · ΔE 20.3Dark cyan · ΔE 25.1
Nearest named CSS colourSea green (#2E8B57)ΔE 13.09, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A6517A
Analogous#51A652, #51A5A6
Triadic#7D51A6, #A67D51
Split complementary#A651A5, #A65351
Tetradic#5251A6, #A6517A, #A4A651

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7ECE2
Lighter +30%#B5DBC9
Lighter +20%#93CAAF
Lighter +10%#71B996
Darker −10%#408463
Darker −20%#306149
Darker −30%#1F3F30
Darker −40%#0E1D16
More saturated +25%#32C57E
Less saturated −25%#70877C

Channel breakdown

R81
G166
B125
Red81 (31.8%)
Green166 (65.1%)
Blue125 (49%)
Hue151.06°
Saturation (HSL)34.41%
Lightness48.43%
Dominant channelGreen
Hex per channelR 51 · G A6 · B 7D

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Every value on this page was computed from “51a67d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.