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Recognised as Colour

#437FD4

  • #437FD4
  • Blue
  • Dark
  • Nearest: Cornflower blue

#437FD4 is a blue with RGB values 67, 127, 212 and HSL 215°, 63%, 55%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#437FD4#437FD4
HEX#437FD4
RGBrgb(67, 127, 212)
RGB (0–1)0.2627, 0.498, 0.8314
RGB percentages26.3%, 49.8%, 83.1%
HSLhsl(215.2, 62.8%, 54.7%)
HSV / HSBhsv(215.2, 68.4%, 83.1%)
CMYK68.4%, 40.1%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,423,636
CSS custom property--colour: #437FD4;

Brightness & contrast

Relative luminance0.21126WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.23:1
Contrast with white4.02:1WCAG normal text: Fail
Contrast with black5.23:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#BC802B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5886D7no red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#4179D2no green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#00939Fno blue cones; rare, and affects men and women equally; ΔE 49.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.02:1WCAG large text: AA
Contrast with black, large text5.23:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.9Dodgerblue · ΔE 15.4Steel blue · ΔE 21.2Royal blue · ΔE 24.6Medium purple · ΔE 28.7Dark slateblue · ΔE 29.5
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.91, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D49843
Analogous#43C7D4, #5043D4
Triadic#D4437F, #7FD443
Split complementary#D45043, #C7D443
Tetradic#D443C7, #D49843, #43D450

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9F0FA
Lighter +30%#C0D4F0
Lighter +20%#96B8E7
Lighter +10%#6D9BDD
Darker −10%#2A66BA
Darker −20%#214F90
Darker −30%#173867
Darker −40%#0E213D
More saturated +25%#267AF1
Less saturated −25%#6084B7

Channel breakdown

R67
G127
B212
Red67 (26.3%)
Green127 (49.8%)
Blue212 (83.1%)
Hue215.17°
Saturation (HSL)62.77%
Lightness54.71%
Dominant channelBlue
Hex per channelR 43 · G 7F · B D4

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Every value on this page was computed from “437fd4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.