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Recognised as Colour

#018A71

  • #018A71
  • Cyan
  • Dark
  • Nearest: Dark cyan

#018A71 is a cyan with RGB values 1, 138, 113 and HSL 169°, 99%, 27%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#018A71#018A71
HEX#018A71
RGBrgb(1, 138, 113)
RGB (0–1)0.0039, 0.5412, 0.4431
RGB percentages0.4%, 54.1%, 44.3%
HSLhsl(169.1, 98.6%, 27.3%)
HSV / HSBhsv(169.1, 99.3%, 54.1%)
CMYK99.3%, 0%, 18.1%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer100,977
CSS custom property--colour: #018A71;

Brightness & contrast

Relative luminance0.19376WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.31:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#FE758E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#858070no red cones; affects about 1% of men; ΔE 37.3 from the original
Deuteranopia#767573no green cones; the most common form, about 1% of men; ΔE 38.1 from the original
Tritanopia#008C83no blue cones; rare, and affects men and women equally; ΔE 9.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.31:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 15.4Sea green · ΔE 15.6Teal · ΔE 16.1Light seagreen · ΔE 18.2Cadetblue · ΔE 24Medium aquamarine · ΔE 24.9
Nearest named CSS colourDark cyan (#008B8B)ΔE 15.4, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A011A
Analogous#018A2D, #015E8A
Triadic#71018A, #8A7101
Split complementary#8A015F, #8A2D01
Tetradic#2C018A, #8A011A, #5E8A01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#59FEE0
Lighter +30%#27FDD6
Lighter +20%#02EFC4
Lighter +10%#01BD9A
Darker −10%#015748
Darker −20%#00251E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#008B72
Less saturated −25%#127966

Channel breakdown

R1
G138
B113
Red1 (0.4%)
Green138 (54.1%)
Blue113 (44.3%)
Hue169.05°
Saturation (HSL)98.56%
Lightness27.25%
Dominant channelGreen
Hex per channelR 01 · G 8A · B 71

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Every value on this page was computed from “018a71” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.