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Recognised as Colour

#00B191

  • #00B191
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#00B191 is a cyan with RGB values 0, 177, 145 and HSL 169°, 100%, 35%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#00B191#00B191
HEX#00B191
RGBrgb(0, 177, 145)
RGB (0–1)0, 0.6941, 0.5686
RGB percentages0%, 69.4%, 56.9%
HSLhsl(169.2, 100%, 34.7%)
HSV / HSBhsv(169.2, 100%, 69.4%)
CMYK100%, 0%, 18.1%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer45,457
CSS custom property--colour: #00B191;

Brightness & contrast

Relative luminance0.33489WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.7:1
Contrast with white2.73:1WCAG normal text: Fail
Contrast with black7.7:1WCAG normal text: AAA
Greyscale equivalent#898989
Inverted#FF4E6E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ABA58Fno red cones; affects about 1% of men; ΔE 44.7 from the original
Deuteranopia#989793no green cones; the most common form, about 1% of men; ΔE 45.5 from the original
Tritanopia#00B3A8no blue cones; rare, and affects men and women equally; ΔE 12.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.73:1WCAG large text: Fail
Contrast with black, large text7.7:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 13.6Light seagreen · ΔE 14.6Medium seagreen · ΔE 18.8Turquoise · ΔE 19.4Sea green · ΔE 20.3Medium turquoise · ΔE 20.5
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 13.63, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B10020
Analogous#00B139, #0078B1
Triadic#9100B1, #B19100
Split complementary#B10078, #B13900
Tetradic#3900B1, #B10020, #78B100

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7EFFE8
Lighter +30%#4BFFDE
Lighter +20%#18FFD5
Lighter +10%#00E4BB
Darker −10%#007E67
Darker −20%#004B3D
Darker −30%#001814
Darker −40%#000000
More saturated +25%#00B191
Less saturated −25%#169B83

Channel breakdown

R0
G177
B145
Red0 (0%)
Green177 (69.4%)
Blue145 (56.9%)
Hue169.15°
Saturation (HSL)100%
Lightness34.71%
Dominant channelGreen
Hex per channelR 00 · G B1 · B 91

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Every value on this page was computed from “00b191” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.