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Colour

#19B1B1

  • #19B1B1
  • Cyan
  • Dark
  • Nearest: Light seagreen

#19B1B1 is a cyan with RGB values 25, 177, 177 and HSL 180°, 75%, 40%. It is a dark colour, so black text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#19B1B1#19B1B1
HEX#19B1B1
RGBrgb(25, 177, 177)
RGB (0–1)0.098, 0.6941, 0.6941
RGB percentages9.8%, 69.4%, 69.4%
HSLhsl(180, 75.2%, 39.6%)
HSV / HSBhsv(180, 85.9%, 69.4%)
CMYK85.9%, 0%, 0%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,683,889
CSS custom property--colour: #19B1B1;

Brightness & contrast

Relative luminance0.34825WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.97:1
Contrast with white2.64:1WCAG normal text: Fail
Contrast with black7.97:1WCAG normal text: AAA
Greyscale equivalent#919191
Inverted#E64E4E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A5A8B1no red cones; affects about 1% of men; ΔE 36.8 from the original
Deuteranopia#9199B2no green cones; the most common form, about 1% of men; ΔE 38.2 from the original
Tritanopia#00B7B1no blue cones; rare, and affects men and women equally; ΔE 4.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.64:1WCAG large text: Fail
Contrast with black, large text7.97:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 4.6Dark turquoise · ΔE 11.1Medium turquoise · ΔE 11.6Dark cyan · ΔE 14.3Cadetblue · ΔE 16.7Teal · ΔE 18.7
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 4.62, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B11919
Analogous#19B165, #1965B1
Triadic#B119B1, #B1B119
Split complementary#B11965, #B16519
Tetradic#6519B1, #B11919, #65B119

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4F2F2
Lighter +30%#77ECEC
Lighter +20%#4AE6E6
Lighter +10%#1FDEDE
Darker −10%#138484
Darker −20%#0C5858
Darker −30%#062B2B
Darker −40%#000000
More saturated +25%#00CACA
Less saturated −25%#329898

Channel breakdown

R25
G177
B177
Red25 (9.8%)
Green177 (69.4%)
Blue177 (69.4%)
Hue180°
Saturation (HSL)75.25%
Lightness39.61%
Dominant channelGreen and Blue
Hex per channelR 19 · G B1 · B B1

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Every value on this page was computed from “19b1b1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.