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Recognised as Colour

#2F40BF

  • #2F40BF
  • Blue
  • Dark
  • Nearest: Slate blue

#2F40BF is a blue with RGB values 47, 64, 191 and HSL 233°, 61%, 47%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#2F40BF#2F40BF
HEX#2F40BF
RGBrgb(47, 64, 191)
RGB (0–1)0.1843, 0.251, 0.749
RGB percentages18.4%, 25.1%, 74.9%
HSLhsl(232.9, 60.5%, 46.7%)
HSV / HSBhsv(232.9, 75.4%, 74.9%)
CMYK75.4%, 66.5%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,096,767
CSS custom property--colour: #2F40BF;

Brightness & contrast

Relative luminance0.08033WCAG 2.x, 0 is black and 1 is white
Perceived brightness85 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.06:1
Contrast with white8.06:1WCAG normal text: AAA
Contrast with black2.61:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#D0BF40

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057C3no red cones; affects about 1% of men; ΔE 18.2 from the original
Deuteranopia#0049BDno green cones; the most common form, about 1% of men; ΔE 9.8 from the original
Tritanopia#00627Ano blue cones; rare, and affects men and women equally; ΔE 71.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.06:1WCAG large text: AAA
Contrast with black, large text2.61:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15.5Royal blue · ΔE 18.3Medium slateblue · ΔE 18.6Rebecca purple · ΔE 21.7Dark blue · ΔE 23Navy · ΔE 23.4
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.48, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BFAE2F
Analogous#2F88BF, #662FBF
Triadic#BF2F40, #40BF2F
Split complementary#BF662F, #88BF2F
Tetradic#BF2F88, #BFAE2F, #2FBF66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8CDF2
Lighter +30%#9FA8E7
Lighter +20%#7783DD
Lighter +10%#4E5DD3
Darker −10%#253296
Darker −20%#1B256D
Darker −30%#111744
Darker −40%#07091B
More saturated +25%#1129DD
Less saturated −25%#4D57A1

Channel breakdown

R47
G64
B191
Red47 (18.4%)
Green64 (25.1%)
Blue191 (74.9%)
Hue232.92°
Saturation (HSL)60.5%
Lightness46.67%
Dominant channelBlue
Hex per channelR 2F · G 40 · B BF

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Every value on this page was computed from “2f40bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.