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Recognised as Colour

#4F91D4

  • #4F91D4
  • Blue
  • Dark
  • Nearest: Steel blue

#4F91D4 is a blue with RGB values 79, 145, 212 and HSL 210°, 61%, 57%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4F91D4#4F91D4
HEX#4F91D4
RGBrgb(79, 145, 212)
RGB (0–1)0.3098, 0.5686, 0.8314
RGB percentages31%, 56.9%, 83.1%
HSLhsl(210.2, 60.7%, 57.1%)
HSV / HSBhsv(210.2, 62.7%, 83.1%)
CMYK62.7%, 31.6%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,214,676
CSS custom property--colour: #4F91D4;

Brightness & contrast

Relative luminance0.26667WCAG 2.x, 0 is black and 1 is white
Perceived brightness139 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.33:1
Contrast with white3.32:1WCAG normal text: Fail
Contrast with black6.33:1WCAG normal text: AA
Greyscale equivalent#888888
Inverted#B06E2B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7494D7no red cones; affects about 1% of men; ΔE 8.2 from the original
Deuteranopia#6287D3no green cones; the most common form, about 1% of men; ΔE 9.9 from the original
Tritanopia#00A1A9no blue cones; rare, and affects men and women equally; ΔE 40.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.32:1WCAG large text: AA
Contrast with black, large text6.33:1WCAG large text: AAA

Named colours

Steel blue · ΔE 11.1Cornflower blue · ΔE 13.5Deep skyblue · ΔE 22.2Dodgerblue · ΔE 25.1Light skyblue · ΔE 26.4Light slate grey · ΔE 29.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 11.05, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D4924F
Analogous#4FD3D4, #504FD4
Triadic#D44F91, #91D44F
Split complementary#D4504F, #D3D44F
Tetradic#D44FD3, #D4924F, #4FD450

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F3F7FC
Lighter +30%#CADEF2
Lighter +20%#A1C4E8
Lighter +10%#78ABDE
Darker −10%#2F77C1
Darker −20%#255E98
Darker −30%#1B456F
Darker −40%#112B46
More saturated +25%#3491EF
Less saturated −25%#6A91B9

Channel breakdown

R79
G145
B212
Red79 (31%)
Green145 (56.9%)
Blue212 (83.1%)
Hue210.23°
Saturation (HSL)60.73%
Lightness57.06%
Dominant channelBlue
Hex per channelR 4F · G 91 · B D4

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Every value on this page was computed from “4f91d4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.