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Recognised as Colour

#337BE0

  • #337BE0
  • Blue
  • Dark
  • Nearest: Dodgerblue

#337BE0 is a blue with RGB values 51, 123, 224 and HSL 215°, 74%, 54%. 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

#337BE0#337BE0
HEX#337BE0
RGBrgb(51, 123, 224)
RGB (0–1)0.2, 0.4824, 0.8784
RGB percentages20%, 48.2%, 87.8%
HSLhsl(215, 73.6%, 53.9%)
HSV / HSBhsv(215, 77.2%, 87.8%)
CMYK77.2%, 45.1%, 0%, 12.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,374,048
CSS custom property--colour: #337BE0;

Brightness & contrast

Relative luminance0.20252WCAG 2.x, 0 is black and 1 is white
Perceived brightness124 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.05:1
Contrast with white4.16:1WCAG normal text: Fail
Contrast with black5.05:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#CC841F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4685E4no red cones; affects about 1% of men; ΔE 5.6 from the original
Deuteranopia#1E75DEno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#0093A2no blue cones; rare, and affects men and women equally; ΔE 57 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.16:1WCAG large text: AA
Contrast with black, large text5.05:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 9.6Cornflower blue · ΔE 13.5Royal blue · ΔE 15.9Slate blue · ΔE 24.1Medium purple · ΔE 25.3Medium slateblue · ΔE 29.2
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 9.62, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E09833
Analogous#33D2E0, #4133E0
Triadic#E0337B, #7BE033
Split complementary#E04233, #D1E033
Tetradic#E033D2, #E09833, #33E042

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4EEFB
Lighter +30%#B8D1F4
Lighter +20%#8CB4ED
Lighter +10%#5F98E7
Darker −10%#1E62C2
Darker −20%#174C96
Darker −30%#10356A
Darker −40%#091F3E
More saturated +25%#1676FD
Less saturated −25%#5080C3

Channel breakdown

R51
G123
B224
Red51 (20%)
Green123 (48.2%)
Blue224 (87.8%)
Hue215.03°
Saturation (HSL)73.62%
Lightness53.92%
Dominant channelBlue
Hex per channelR 33 · G 7B · B E0

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Every value on this page was computed from “337be0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.