Recognised as Colour

#217BE9

#217BE9
Blue
Dark
Nearest: Dodgerblue

#217BE9 is a blue with RGB values 33, 123, 233 and HSL 213°, 82%, 52%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#217BE9#217BE9

HEX#217BE9

RGBrgb(33, 123, 233)

RGB (0–1)0.1294, 0.4824, 0.9137

RGB percentages12.9%, 48.2%, 91.4%

HSLhsl(213, 82%, 52.2%)

HSV / HSBhsv(213, 85.8%, 91.4%)

CMYK85.8%, 47.2%, 0%, 8.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,194,409

CSS custom property--colour: #217BE9;

Brightness & contrast

Relative luminance0.20372WCAG 2.x, 0 is black and 1 is white

Perceived brightness124.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.07:1

Contrast with white4.14:1WCAG normal text: Fail

Contrast with black5.07:1WCAG normal text: AA

Greyscale equivalent#707070

Inverted#DE8416

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3B86EDno red cones; affects about 1% of men; ΔE 6.4 from the original

Deuteranopia#0074E7no green cones; the most common form, about 1% of men; ΔE 4.4 from the original

Tritanopia#0096A7no blue cones; rare, and affects men and women equally; ΔE 60.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text4.14:1WCAG large text: AA

Contrast with black, large text5.07:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 8.6 Royal blue · ΔE 12.6 Cornflower blue · ΔE 17.4 Slate blue · ΔE 22.9 Medium purple · ΔE 25.6 Medium slateblue · ΔE 26.5

Nearest named CSS colourDodgerblue (#1E90FF)ΔE 8.6, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#E98F21

Analogous#21DFE9, #2B21E9

Triadic#E9217B, #7BE921

Split complementary#E92B21, #DFE921

Tetradic#E921DF, #E98F21, #21E92B

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#DBE9FB

Lighter +30%#ACCEF7

Lighter +20%#7EB2F2

Lighter +10%#4F97EE

Darker −10%#1363C4

Darker −20%#0F4B95

Darker −30%#0A3467

Darker −40%#061C38

More saturated +25%#0B79FF

Less saturated −25%#407ECB

Channel breakdown

R33

G123

B233

Red33 (12.9%)

Green123 (48.2%)

Blue233 (91.4%)

Hue213°

Saturation (HSL)81.97%

Lightness52.16%

Dominant channelBlue

Hex per channelR 21 · G 7B · B E9

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#217BE9

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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