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Recognised as Colour

#291DDF

  • #291DDF
  • Blue
  • Dark
  • Nearest: Medium blue

#291DDF is a blue with RGB values 41, 29, 223 and HSL 244°, 77%, 49%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#291DDF#291DDF
HEX#291DDF
RGBrgb(41, 29, 223)
RGB (0–1)0.1608, 0.1137, 0.8745
RGB percentages16.1%, 11.4%, 87.5%
HSLhsl(243.7, 77%, 49.4%)
HSV / HSBhsv(243.7, 87%, 87.5%)
CMYK81.6%, 87%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,694,623
CSS custom property--colour: #291DDF;

Brightness & contrast

Relative luminance0.06678WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.99:1
Contrast with white8.99:1WCAG normal text: AAA
Contrast with black2.34:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#D6E220

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0052E4no red cones; affects about 1% of men; ΔE 32 from the original
Deuteranopia#003FDCno green cones; the most common form, about 1% of men; ΔE 21.2 from the original
Tritanopia#006185no blue cones; rare, and affects men and women equally; ΔE 100 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.99:1WCAG large text: AAA
Contrast with black, large text2.34:1WCAG large text: Fail

Named colours

Medium blue · ΔE 6.4Blue violet · ΔE 20.8Blue · ΔE 21.3Dark violet · ΔE 25.5Dark blue · ΔE 31.9Dark orchid · ΔE 34
Nearest named CSS colourMedium blue (#0000CD)ΔE 6.36, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D3DF1D
Analogous#1D72DF, #8A1DDF
Triadic#DF291D, #1DDF29
Split complementary#DF8A1D, #72DF1D
Tetradic#DF1D72, #D3DF1D, #1DDF8A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D2CFF9
Lighter +30%#A7A2F3
Lighter +20%#7C75ED
Lighter +10%#5248E7
Darker −10%#2117B2
Darker −20%#181185
Darker −30%#100B58
Darker −40%#08062A
More saturated +25%#1000FC
Less saturated −25%#453DC0

Channel breakdown

R41
G29
B223
Red41 (16.1%)
Green29 (11.4%)
Blue223 (87.5%)
Hue243.71°
Saturation (HSL)76.98%
Lightness49.41%
Dominant channelBlue
Hex per channelR 29 · G 1D · B DF

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Every value on this page was computed from “291ddf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.