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Colour

#2291FF

  • #2291FF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#2291FF is a blue with RGB values 34, 145, 255 and HSL 210°, 100%, 57%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#2291FF#2291FF
HEX#2291FF
RGBrgb(34, 145, 255)
RGB (0–1)0.1333, 0.5686, 1
RGB percentages13.3%, 56.9%, 100%
HSLhsl(209.9, 100%, 56.7%)
HSV / HSBhsv(209.9, 86.7%, 100%)
CMYK86.7%, 43.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,265,599
CSS custom property--colour: #2291FF;

Brightness & contrast

Relative luminance0.27811WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.8 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#818181
Inverted#DD6E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#579AFFno red cones; affects about 1% of men; ΔE 7.5 from the original
Deuteranopia#2887FDno green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#00ACBBno blue cones; rare, and affects men and women equally; ΔE 60.6 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

Dodgerblue · ΔE 0.7Cornflower blue · ΔE 13.7Royal blue · ΔE 20.6Medium purple · ΔE 30.4Slate blue · ΔE 30.5Medium slateblue · ΔE 32.5
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 0.74, indistinguishable to the eye
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF9022
Analogous#22FFFF, #2222FF
Triadic#FF2291, #91FF22
Split complementary#FF2222, #FFFF22
Tetradic#FF22FF, #FF9022, #22FF22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EEF7FF
Lighter +30%#BBDDFF
Lighter +20%#88C4FF
Lighter +10%#55AAFF
Darker −10%#0078EE
Darker −20%#005EBB
Darker −30%#004488
Darker −40%#002B55
More saturated +25%#2291FF
Less saturated −25%#3E91E3

Channel breakdown

R34
G145
B255
Red34 (13.3%)
Green145 (56.9%)
Blue255 (100%)
Hue209.86°
Saturation (HSL)100%
Lightness56.67%
Dominant channelBlue
Hex per channelR 22 · G 91 · B FF

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Every value on this page was computed from “2291ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.