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Recognised as Colour

#6373BB

  • #6373BB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#6373BB is a blue with RGB values 99, 115, 187 and HSL 229°, 39%, 56%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#6373BB#6373BB
HEX#6373BB
RGBrgb(99, 115, 187)
RGB (0–1)0.3882, 0.451, 0.7333
RGB percentages38.8%, 45.1%, 73.3%
HSLhsl(229.1, 39.3%, 56.1%)
HSV / HSBhsv(229.1, 47.1%, 73.3%)
CMYK47.1%, 38.5%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,517,691
CSS custom property--colour: #6373BB;

Brightness & contrast

Relative luminance0.18502WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.7:1
Contrast with white4.47:1WCAG normal text: Fail
Contrast with black4.7:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#9C8C44

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#587BBEno red cones; affects about 1% of men; ΔE 6.8 from the original
Deuteranopia#5074B9no green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#42828Eno blue cones; rare, and affects men and women equally; ΔE 40.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.47:1WCAG large text: AA
Contrast with black, large text4.7:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 15.8Steel blue · ΔE 19.5Dark slateblue · ΔE 23Dodgerblue · ΔE 25.6Medium purple · ΔE 25.7Royal blue · ΔE 28.5
Nearest named CSS colourCornflower blue (#6495ED)ΔE 15.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BBAB63
Analogous#639FBB, #7F63BB
Triadic#BB6373, #73BB63
Split complementary#BB7F63, #9FBB63
Tetradic#BB639F, #BBAB63, #63BB7F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F3F9
Lighter +30%#CED3E9
Lighter +20%#AAB3DA
Lighter +10%#8793CA
Darker −10%#4758A4
Darker −20%#384580
Darker −30%#28325D
Darker −40%#191F39
More saturated +25%#4761D7
Less saturated −25%#7F859F

Channel breakdown

R99
G115
B187
Red99 (38.8%)
Green115 (45.1%)
Blue187 (73.3%)
Hue229.09°
Saturation (HSL)39.29%
Lightness56.08%
Dominant channelBlue
Hex per channelR 63 · G 73 · B BB

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Every value on this page was computed from “6373bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.