Colour

#4370BB

#4370BB
Blue
Dark
Nearest: Cornflower blue

#4370BB is a blue with RGB values 67, 112, 187 and HSL 218°, 47%, 50%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#4370BB#4370BB

HEX#4370BB

RGBrgb(67, 112, 187)

RGB (0–1)0.2627, 0.4392, 0.7333

RGB percentages26.3%, 43.9%, 73.3%

HSLhsl(217.5, 47.2%, 49.8%)

HSV / HSBhsv(217.5, 64.2%, 73.3%)

CMYK64.2%, 40.1%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,419,771

CSS custom property--colour: #4370BB;

Brightness & contrast

Relative luminance0.16369WCAG 2.x, 0 is black and 1 is white

Perceived brightness112.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.91:1

Contrast with white4.91:1WCAG normal text: AA

Contrast with black4.27:1WCAG normal text: Fail

Greyscale equivalent#6C6C6C

Inverted#BC8F44

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4F77BEno red cones; affects about 1% of men; ΔE 3.9 from the original

Deuteranopia#3D6BB9no green cones; the most common form, about 1% of men; ΔE 2.9 from the original

Tritanopia#00818Cno blue cones; rare, and affects men and women equally; ΔE 45.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.91:1WCAG large text: AAA

Contrast with black, large text4.27:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 15.4 Steel blue · ΔE 18.1 Dodgerblue · ΔE 22.7 Dark slateblue · ΔE 24.2 Royal blue · ΔE 27.5 Medium purple · ΔE 29.8

Nearest named CSS colourCornflower blue (#6495ED)ΔE 15.38, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BB8E43

Analogous#43ACBB, #5243BB

Triadic#BB4370, #70BB43

Split complementary#BB5243, #ACBB43

Tetradic#BB43AC, #BB8E43, #43BB52

Tints, shades & saturation

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

Lighter +40%#D9E2F1

Lighter +30%#B3C5E4

Lighter +20%#8EA9D6

Lighter +10%#688CC9

Darker −10%#365A95

Darker −20%#284370

Darker −30%#1B2D4A

Darker −40%#0D1625

More saturated +25%#2368DB

Less saturated −25%#63789B

Channel breakdown

R67

G112

B187

Red67 (26.3%)

Green112 (43.9%)

Blue187 (73.3%)

Hue217.5°

Saturation (HSL)47.24%

Lightness49.8%

Dominant channelBlue

Hex per channelR 43 · G 70 · B BB

Keep nerding

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#4370BB

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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