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Recognised as Colour

#437FD5

  • #437FD5
  • Blue
  • Dark
  • Nearest: Cornflower blue

#437FD5 is a blue with RGB values 67, 127, 213 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

#437FD5#437FD5
HEX#437FD5
RGBrgb(67, 127, 213)
RGB (0–1)0.2627, 0.498, 0.8353
RGB percentages26.3%, 49.8%, 83.5%
HSLhsl(215.3, 63.5%, 54.9%)
HSV / HSBhsv(215.3, 68.5%, 83.5%)
CMYK68.5%, 40.4%, 0%, 16.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,423,637
CSS custom property--colour: #437FD5;

Brightness & contrast

Relative luminance0.21176WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.24:1
Contrast with white4.01:1WCAG normal text: Fail
Contrast with black5.24:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#BC802A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5786D8no red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#4079D3no green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#0093A0no blue cones; rare, and affects men and women equally; ΔE 49.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.01:1WCAG large text: AA
Contrast with black, large text5.24:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.8Dodgerblue · ΔE 14.9Steel blue · ΔE 21.8Royal blue · ΔE 24Medium purple · ΔE 28.3Dark slateblue · ΔE 29.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.84, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D59943
Analogous#43C8D5, #5043D5
Triadic#D5437F, #7FD543
Split complementary#D55043, #C8D543
Tetradic#D543C8, #D59943, #43D550

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EAF1FA
Lighter +30%#C0D4F1
Lighter +20%#96B8E8
Lighter +10%#6D9BDE
Darker −10%#2A66BB
Darker −20%#214F91
Darker −30%#173868
Darker −40%#0E223E
More saturated +25%#267AF2
Less saturated −25%#6084B8

Channel breakdown

R67
G127
B213
Red67 (26.3%)
Green127 (49.8%)
Blue213 (83.5%)
Hue215.34°
Saturation (HSL)63.48%
Lightness54.9%
Dominant channelBlue
Hex per channelR 43 · G 7F · B D5

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Every value on this page was computed from “437fd5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.