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Colour

#403FBF

  • #403FBF
  • Blue
  • Dark
  • Nearest: Slate blue

#403FBF is a blue with RGB values 64, 63, 191 and HSL 240°, 50%, 50%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#403FBF#403FBF
HEX#403FBF
RGBrgb(64, 63, 191)
RGB (0–1)0.251, 0.2471, 0.749
RGB percentages25.1%, 24.7%, 74.9%
HSLhsl(240.5, 50.4%, 49.8%)
HSV / HSBhsv(240.5, 67%, 74.9%)
CMYK66.5%, 67%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,210,623
CSS custom property--colour: #403FBF;

Brightness & contrast

Relative luminance0.08407WCAG 2.x, 0 is black and 1 is white
Perceived brightness87.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.83:1
Contrast with white7.83:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#BFC040

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058C3no red cones; affects about 1% of men; ΔE 20.8 from the original
Deuteranopia#004CBDno green cones; the most common form, about 1% of men; ΔE 14.3 from the original
Tritanopia#00617Ano blue cones; rare, and affects men and women equally; ΔE 71.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.83:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14.6Medium slateblue · ΔE 17.4Royal blue · ΔE 19.4Rebecca purple · ΔE 20Dark blue · ΔE 22.4Indigo · ΔE 22.7
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 14.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BEBF3F
Analogous#3F7EBF, #803FBF
Triadic#BF403F, #3FBF40
Split complementary#BF803F, #7EBF3F
Tetradic#BF3F7E, #BEBF3F, #3FBF80

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8D8F2
Lighter +30%#B2B2E5
Lighter +20%#8C8BD9
Lighter +10%#6665CC
Darker −10%#333299
Darker −20%#262672
Darker −30%#19194C
Darker −40%#0D0C26
More saturated +25%#211FDF
Less saturated −25%#5F5F9F

Channel breakdown

R64
G63
B191
Red64 (25.1%)
Green63 (24.7%)
Blue191 (74.9%)
Hue240.47°
Saturation (HSL)50.39%
Lightness49.8%
Dominant channelBlue
Hex per channelR 40 · G 3F · B BF

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Every value on this page was computed from “403fbf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.