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Colour

#1F50BD

  • #1F50BD
  • Blue
  • Dark
  • Nearest: Royal blue

#1F50BD is a blue with RGB values 31, 80, 189 and HSL 221°, 72%, 43%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#1F50BD#1F50BD
HEX#1F50BD
RGBrgb(31, 80, 189)
RGB (0–1)0.1216, 0.3137, 0.7412
RGB percentages12.2%, 31.4%, 74.1%
HSLhsl(221.4, 71.8%, 43.1%)
HSV / HSBhsv(221.4, 83.6%, 74.1%)
CMYK83.6%, 57.7%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,052,285
CSS custom property--colour: #1F50BD;

Brightness & contrast

Relative luminance0.09703WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.14:1
Contrast with white7.14:1WCAG normal text: AAA
Contrast with black2.94:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#E0AF42

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005FC1no red cones; affects about 1% of men; ΔE 11.4 from the original
Deuteranopia#0051BBno green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#006C7Eno blue cones; rare, and affects men and women equally; ΔE 63 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.14:1WCAG large text: AAA
Contrast with black, large text2.94:1WCAG large text: Fail

Named colours

Royal blue · ΔE 11.1Slate blue · ΔE 14Dark slateblue · ΔE 20.7Medium slateblue · ΔE 22Rebecca purple · ΔE 23.3Medium purple · ΔE 24.1
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.15, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD8C1F
Analogous#1F9FBD, #3D1FBD
Triadic#BD1F50, #50BD1F
Split complementary#BD3D1F, #9FBD1F
Tetradic#BD1F9F, #BD8C1F, #1FBD3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B5C8F3
Lighter +30%#89A8EC
Lighter +20%#5D87E5
Lighter +10%#3267DD
Darker −10%#183D91
Darker −20%#112B65
Darker −30%#09183A
Darker −40%#02060E
More saturated +25%#0446D9
Less saturated −25%#3B5AA2

Channel breakdown

R31
G80
B189
Red31 (12.2%)
Green80 (31.4%)
Blue189 (74.1%)
Hue221.39°
Saturation (HSL)71.82%
Lightness43.14%
Dominant channelBlue
Hex per channelR 1F · G 50 · B BD

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Every value on this page was computed from “1f50bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.