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Colour

#289DB2

  • #289DB2
  • Cyan
  • Dark
  • Nearest: Cadetblue

#289DB2 is a cyan with RGB values 40, 157, 178 and HSL 189°, 63%, 43%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#289DB2#289DB2
HEX#289DB2
RGBrgb(40, 157, 178)
RGB (0–1)0.1569, 0.6157, 0.698
RGB percentages15.7%, 61.6%, 69.8%
HSLhsl(189.1, 63.3%, 42.7%)
HSV / HSBhsv(189.1, 77.5%, 69.8%)
CMYK77.5%, 11.8%, 0%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,661,810
CSS custom property--colour: #289DB2;

Brightness & contrast

Relative luminance0.27779WCAG 2.x, 0 is black and 1 is white
Perceived brightness136.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.56:1
Contrast with white3.2:1WCAG normal text: Fail
Contrast with black6.56:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#D7624D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8D97B3no red cones; affects about 1% of men; ΔE 27.2 from the original
Deuteranopia#7B8AB2no green cones; the most common form, about 1% of men; ΔE 28.5 from the original
Tritanopia#00A5A3no blue cones; rare, and affects men and women equally; ΔE 15.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.2:1WCAG large text: AA
Contrast with black, large text6.56:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 13.4Dark cyan · ΔE 14.8Teal · ΔE 16.9Light seagreen · ΔE 20.1Sky blue · ΔE 21.7Dark turquoise · ΔE 23.2
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 13.4, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B23D28
Analogous#28B282, #2858B2
Triadic#B2289D, #9DB228
Split complementary#B22858, #B28228
Tetradic#8228B2, #B23D28, #58B228

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B7E6EF
Lighter +30%#8ED8E5
Lighter +20%#64CADC
Lighter +10%#3ABCD3
Darker −10%#1F7888
Darker −20%#15545F
Darker −30%#0C2F35
Darker −40%#030A0B
More saturated +25%#0DB0CD
Less saturated −25%#438A97

Channel breakdown

R40
G157
B178
Red40 (15.7%)
Green157 (61.6%)
Blue178 (69.8%)
Hue189.13°
Saturation (HSL)63.3%
Lightness42.75%
Dominant channelBlue
Hex per channelR 28 · G 9D · B B2

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Every value on this page was computed from “289db2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.