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Recognised as Colour

#3969CF

  • #3969CF
  • Blue
  • Dark
  • Nearest: Royal blue

#3969CF is a blue with RGB values 57, 105, 207 and HSL 221°, 61%, 52%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3969CF#3969CF
HEX#3969CF
RGBrgb(57, 105, 207)
RGB (0–1)0.2235, 0.4118, 0.8118
RGB percentages22.4%, 41.2%, 81.2%
HSLhsl(220.8, 61%, 51.8%)
HSV / HSBhsv(220.8, 72.5%, 81.2%)
CMYK72.5%, 49.3%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,762,639
CSS custom property--colour: #3969CF;

Brightness & contrast

Relative luminance0.15478WCAG 2.x, 0 is black and 1 is white
Perceived brightness111 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.13:1
Contrast with white5.13:1WCAG normal text: AA
Contrast with black4.1:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#C69630

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2E75D3no red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#0067CDno green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#008192no blue cones; rare, and affects men and women equally; ΔE 58 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.13:1WCAG large text: AAA
Contrast with black, large text4.1:1WCAG large text: AA

Named colours

Royal blue · ΔE 10.9Dodgerblue · ΔE 16.8Slate blue · ΔE 17.4Cornflower blue · ΔE 20Medium purple · ΔE 21.4Dark slateblue · ΔE 23.1
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.93, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF9F39
Analogous#39B4CF, #5439CF
Triadic#CF3969, #69CF39
Split complementary#CF5439, #B4CF39
Tetradic#CF39B4, #CF9F39, #39CF54

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DDE5F7
Lighter +30%#B4C6ED
Lighter +20%#8BA7E3
Lighter +10%#6288D9
Darker −10%#2A53AB
Darker −20%#203F82
Darker −30%#162B59
Darker −40%#0C1730
More saturated +25%#1A5EEE
Less saturated −25%#5874B0

Channel breakdown

R57
G105
B207
Red57 (22.4%)
Green105 (41.2%)
Blue207 (81.2%)
Hue220.8°
Saturation (HSL)60.98%
Lightness51.76%
Dominant channelBlue
Hex per channelR 39 · G 69 · B CF

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Every value on this page was computed from “3969cf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.