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Recognised as Colour

#00A581

  • #00A581
  • Cyan
  • Dark
  • Nearest: Sea green

#00A581 is a cyan with RGB values 0, 165, 129 and HSL 167°, 100%, 32%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Sea green.

Colour values

#00A581#00A581
HEX#00A581
RGBrgb(0, 165, 129)
RGB (0–1)0, 0.6471, 0.5059
RGB percentages0%, 64.7%, 50.6%
HSLhsl(166.9, 100%, 32.4%)
HSV / HSBhsv(166.9, 100%, 64.7%)
CMYK100%, 0%, 21.8%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer42,369
CSS custom property--colour: #00A581;

Brightness & contrast

Relative luminance0.28495WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.7:1
Contrast with white3.13:1WCAG normal text: Fail
Contrast with black6.7:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#FF5A7E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A0997Fno red cones; affects about 1% of men; ΔE 43.7 from the original
Deuteranopia#8F8C84no green cones; the most common form, about 1% of men; ΔE 44.9 from the original
Tritanopia#00A69Bno blue cones; rare, and affects men and women equally; ΔE 14.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.13:1WCAG large text: AA
Contrast with black, large text6.7:1WCAG large text: AAA

Named colours

Sea green · ΔE 15.4Medium aquamarine · ΔE 16.8Medium seagreen · ΔE 16.8Light seagreen · ΔE 17.6Dark cyan · ΔE 24.1Turquoise · ΔE 24.5
Nearest named CSS colourSea green (#2E8B57)ΔE 15.41, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A50024
Analogous#00A52E, #0077A5
Triadic#8100A5, #A58100
Split complementary#A50077, #A52E00
Tetradic#2E00A5, #A50024, #77A500

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#72FFE0
Lighter +30%#3FFFD5
Lighter +20%#0CFFCA
Lighter +10%#00D8A9
Darker −10%#007259
Darker −20%#003F31
Darker −30%#000C09
Darker −40%#000000
More saturated +25%#00A581
Less saturated −25%#159075

Channel breakdown

R0
G165
B129
Red0 (0%)
Green165 (64.7%)
Blue129 (50.6%)
Hue166.91°
Saturation (HSL)100%
Lightness32.35%
Dominant channelGreen
Hex per channelR 00 · G A5 · B 81

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Every value on this page was computed from “00a581” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.