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Recognised as Colour

#317FD3

  • #317FD3
  • Blue
  • Dark
  • Nearest: Cornflower blue

#317FD3 is a blue with RGB values 49, 127, 211 and HSL 211°, 65%, 51%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#317FD3#317FD3
HEX#317FD3
RGBrgb(49, 127, 211)
RGB (0–1)0.1922, 0.498, 0.8275
RGB percentages19.2%, 49.8%, 82.7%
HSLhsl(211.1, 64.8%, 51%)
HSV / HSBhsv(211.1, 76.8%, 82.7%)
CMYK76.8%, 39.8%, 0%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,243,987
CSS custom property--colour: #317FD3;

Brightness & contrast

Relative luminance0.20535WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.11:1
Contrast with white4.11:1WCAG normal text: Fail
Contrast with black5.11:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#CE802C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5785D6no red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#3C76D1no green cones; the most common form, about 1% of men; ΔE 7.1 from the original
Tritanopia#00939Fno blue cones; rare, and affects men and women equally; ΔE 48 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.11:1WCAG large text: AA
Contrast with black, large text5.11:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.3Dodgerblue · ΔE 15.8Steel blue · ΔE 20.2Royal blue · ΔE 26.3Dark slateblue · ΔE 30.9Medium purple · ΔE 31.5
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.29, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D38531
Analogous#31D0D3, #3431D3
Triadic#D3317F, #7FD331
Split complementary#D33431, #D0D331
Tetradic#D331D0, #D38531, #31D334

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9E7F7
Lighter +30%#AFCDEE
Lighter +20%#85B3E5
Lighter +10%#5B99DC
Darker −10%#2566AC
Darker −20%#1C4D82
Darker −30%#133458
Darker −40%#0A1B2E
More saturated +25%#127EF2
Less saturated −25%#5080B4

Channel breakdown

R49
G127
B211
Red49 (19.2%)
Green127 (49.8%)
Blue211 (82.7%)
Hue211.11°
Saturation (HSL)64.8%
Lightness50.98%
Dominant channelBlue
Hex per channelR 31 · G 7F · B D3

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Every value on this page was computed from “317fd3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.