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Recognised as Colour

#1D41B2

  • #1D41B2
  • Blue
  • Dark
  • Nearest: Slate blue

#1D41B2 is a blue with RGB values 29, 65, 178 and HSL 226°, 72%, 41%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#1D41B2#1D41B2
HEX#1D41B2
RGBrgb(29, 65, 178)
RGB (0–1)0.1137, 0.2549, 0.698
RGB percentages11.4%, 25.5%, 69.8%
HSLhsl(225.5, 72%, 40.6%)
HSV / HSBhsv(225.5, 83.7%, 69.8%)
CMYK83.7%, 63.5%, 0%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,917,362
CSS custom property--colour: #1D41B2;

Brightness & contrast

Relative luminance0.07256WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.57:1
Contrast with white8.57:1WCAG normal text: AAA
Contrast with black2.45:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#E2BE4D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053B6no red cones; affects about 1% of men; ΔE 13.8 from the original
Deuteranopia#0045B0no green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#005F73no blue cones; rare, and affects men and women equally; ΔE 65.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.57:1WCAG large text: AAA
Contrast with black, large text2.45:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15Royal blue · ΔE 16.2Rebecca purple · ΔE 20.1Midnight blue · ΔE 21.5Dark slateblue · ΔE 21.8Medium slateblue · ΔE 22.4
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B28E1D
Analogous#1D8CB2, #431DB2
Triadic#B21D41, #41B21D
Split complementary#B2431D, #8CB21D
Tetradic#B21D8C, #B28E1D, #1DB243

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AABBF1
Lighter +30%#7E98EA
Lighter +20%#5275E3
Lighter +10%#2652DC
Darker −10%#163186
Darker −20%#0F215A
Darker −30%#08112E
Darker −40%#000103
More saturated +25%#0334CC
Less saturated −25%#374E98

Channel breakdown

R29
G65
B178
Red29 (11.4%)
Green65 (25.5%)
Blue178 (69.8%)
Hue225.5°
Saturation (HSL)71.98%
Lightness40.59%
Dominant channelBlue
Hex per channelR 1D · G 41 · B B2

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Every value on this page was computed from “1d41b2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.