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Colour

#289CF9

  • #289CF9
  • Blue
  • Dark
  • Nearest: Cornflower blue

#289CF9 is a blue with RGB values 40, 156, 249 and HSL 207°, 95%, 57%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#289CF9#289CF9
HEX#289CF9
RGBrgb(40, 156, 249)
RGB (0–1)0.1569, 0.6118, 0.9765
RGB percentages15.7%, 61.2%, 97.6%
HSLhsl(206.7, 94.6%, 56.7%)
HSV / HSBhsv(206.7, 83.9%, 97.6%)
CMYK83.9%, 37.3%, 0%, 2.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,661,625
CSS custom property--colour: #289CF9;

Brightness & contrast

Relative luminance0.31068WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.21:1
Contrast with white2.91:1WCAG normal text: Fail
Contrast with black7.21:1WCAG normal text: AAA
Greyscale equivalent#8A8A8A
Inverted#D76306

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6FA1FDno red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#4F8FF7no green cones; the most common form, about 1% of men; ΔE 12 from the original
Tritanopia#00B2BEno blue cones; rare, and affects men and women equally; ΔE 51.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.91:1WCAG large text: Fail
Contrast with black, large text7.21:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.9Dodgerblue · ΔE 12.5Deep skyblue · ΔE 24.8Steel blue · ΔE 25.5Royal blue · ΔE 30.8Light skyblue · ΔE 33.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.91, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F98528
Analogous#28F9ED, #2834F9
Triadic#F9289C, #9CF928
Split complementary#F92834, #F9ED28
Tetradic#ED28F9, #F98528, #34F928

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EEF7FF
Lighter +30%#BDE1FD
Lighter +20%#8BCAFC
Lighter +10%#5AB3FA
Darker −10%#0683E8
Darker −20%#0567B6
Darker −30%#044B84
Darker −40%#022F53
More saturated +25%#229DFF
Less saturated −25%#4499DD

Channel breakdown

R40
G156
B249
Red40 (15.7%)
Green156 (61.2%)
Blue249 (97.6%)
Hue206.7°
Saturation (HSL)94.57%
Lightness56.67%
Dominant channelBlue
Hex per channelR 28 · G 9C · B F9

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Every value on this page was computed from “289cf9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.