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Recognised as Colour

#2F42DA

  • #2F42DA
  • Blue
  • Dark
  • Nearest: Medium slateblue

#2F42DA is a blue with RGB values 47, 66, 218 and HSL 233°, 70%, 52%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#2F42DA#2F42DA
HEX#2F42DA
RGBrgb(47, 66, 218)
RGB (0–1)0.1843, 0.2588, 0.8549
RGB percentages18.4%, 25.9%, 85.5%
HSLhsl(233.3, 69.8%, 52%)
HSV / HSBhsv(233.3, 78.4%, 85.5%)
CMYK78.4%, 69.7%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,097,306
CSS custom property--colour: #2F42DA;

Brightness & contrast

Relative luminance0.09563WCAG 2.x, 0 is black and 1 is white
Perceived brightness92.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.21:1
Contrast with white7.21:1WCAG normal text: AAA
Contrast with black2.91:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#D0BD25

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005FDFno red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#004FD7no green cones; the most common form, about 1% of men; ΔE 12.4 from the original
Tritanopia#006D89no blue cones; rare, and affects men and women equally; ΔE 83.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.21:1WCAG large text: AAA
Contrast with black, large text2.91:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 20.9Blue violet · ΔE 24.6Slate blue · ΔE 24.9Dark blue · ΔE 24.9Royal blue · ΔE 26.4Medium blue · ΔE 27.3
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 20.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DAC72F
Analogous#2F97DA, #722FDA
Triadic#DA2F42, #42DA2F
Split complementary#DA722F, #97DA2F
Tetradic#DA2F97, #DAC72F, #2FDA72

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DCDFF9
Lighter +30%#B1B8F1
Lighter +20%#8691E9
Lighter +10%#5A69E2
Darker −10%#2031B6
Darker −20%#19258A
Darker −30%#111A5F
Darker −40%#090E34
More saturated +25%#102AF9
Less saturated −25%#4E5ABB

Channel breakdown

R47
G66
B218
Red47 (18.4%)
Green66 (25.9%)
Blue218 (85.5%)
Hue233.33°
Saturation (HSL)69.8%
Lightness51.96%
Dominant channelBlue
Hex per channelR 2F · G 42 · B DA

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Every value on this page was computed from “2f42da” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.