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Recognised as Colour

#01B391

  • #01B391
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#01B391 is a cyan with RGB values 1, 179, 145 and HSL 169°, 99%, 35%. It is a dark colour, so black text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#01B391#01B391
HEX#01B391
RGBrgb(1, 179, 145)
RGB (0–1)0.0039, 0.702, 0.5686
RGB percentages0.4%, 70.2%, 56.9%
HSLhsl(168.5, 98.9%, 35.3%)
HSV / HSBhsv(168.5, 99.4%, 70.2%)
CMYK99.4%, 0%, 19%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer111,505
CSS custom property--colour: #01B391;

Brightness & contrast

Relative luminance0.34291WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.86:1
Contrast with white2.67:1WCAG normal text: Fail
Contrast with black7.86:1WCAG normal text: AAA
Greyscale equivalent#8B8B8B
Inverted#FE4C6E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ADA68Fno red cones; affects about 1% of men; ΔE 45.6 from the original
Deuteranopia#9A9993no green cones; the most common form, about 1% of men; ΔE 45.9 from the original
Tritanopia#00B5A9no blue cones; rare, and affects men and women equally; ΔE 12.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.67:1WCAG large text: Fail
Contrast with black, large text7.86:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 13.4Light seagreen · ΔE 15.8Medium seagreen · ΔE 17.7Turquoise · ΔE 19.4Sea green · ΔE 20.3Medium turquoise · ΔE 21.1
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 13.43, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B30123
Analogous#01B338, #017CB3
Triadic#9101B3, #B39101
Split complementary#B3017C, #B33801
Tetradic#3801B3, #B30123, #7CB301

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#82FEE6
Lighter +30%#4FFEDD
Lighter +20%#1CFED3
Lighter +10%#01E6BA
Darker −10%#018068
Darker −20%#004E3F
Darker −30%#001B16
Darker −40%#000000
More saturated +25%#00B492
Less saturated −25%#189C83

Channel breakdown

R1
G179
B145
Red1 (0.4%)
Green179 (70.2%)
Blue145 (56.9%)
Hue168.54°
Saturation (HSL)98.89%
Lightness35.29%
Dominant channelGreen
Hex per channelR 01 · G B3 · B 91

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Every value on this page was computed from “01b391” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.