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Recognised as Colour

#337CCE

  • #337CCE
  • Blue
  • Dark
  • Nearest: Cornflower blue

#337CCE is a blue with RGB values 51, 124, 206 and HSL 212°, 61%, 50%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#337CCE#337CCE
HEX#337CCE
RGBrgb(51, 124, 206)
RGB (0–1)0.2, 0.4863, 0.8078
RGB percentages20%, 48.6%, 80.8%
HSLhsl(211.7, 61.3%, 50.4%)
HSV / HSBhsv(211.7, 75.2%, 80.8%)
CMYK75.2%, 39.8%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,374,286
CSS custom property--colour: #337CCE;

Brightness & contrast

Relative luminance0.19575WCAG 2.x, 0 is black and 1 is white
Perceived brightness121 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.92:1
Contrast with white4.27:1WCAG normal text: Fail
Contrast with black4.92:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#CC8331

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5582D1no red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#3C74CCno green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#008F9Bno blue cones; rare, and affects men and women equally; ΔE 47 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.27:1WCAG large text: AA
Contrast with black, large text4.92:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 11.2Dodgerblue · ΔE 17.2Steel blue · ΔE 19.3Royal blue · ΔE 26.6Dark slateblue · ΔE 29.7Medium purple · ΔE 31.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 11.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CE8533
Analogous#33C9CE, #3833CE
Triadic#CE337C, #7CCE33
Split complementary#CE3833, #CACE33
Tetradic#CE33C9, #CE8533, #33CE38

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7E6F6
Lighter +30%#AECBEC
Lighter +20%#85B1E2
Lighter +10%#5C96D8
Darker −10%#2863A6
Darker −20%#1E4B7D
Darker −30%#143254
Darker −40%#0A1A2B
More saturated +25%#137AEE
Less saturated −25%#537EAE

Channel breakdown

R51
G124
B206
Red51 (20%)
Green124 (48.6%)
Blue206 (80.8%)
Hue211.74°
Saturation (HSL)61.26%
Lightness50.39%
Dominant channelBlue
Hex per channelR 33 · G 7C · B CE

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