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Recognised as Colour

#1D3FD4

  • #1D3FD4
  • Blue
  • Dark
  • Nearest: Medium slateblue

#1D3FD4 is a blue with RGB values 29, 63, 212 and HSL 229°, 76%, 47%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#1D3FD4#1D3FD4
HEX#1D3FD4
RGBrgb(29, 63, 212)
RGB (0–1)0.1137, 0.2471, 0.8314
RGB percentages11.4%, 24.7%, 83.1%
HSLhsl(228.9, 75.9%, 47.3%)
HSV / HSBhsv(228.9, 86.3%, 83.1%)
CMYK86.3%, 70.3%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,916,884
CSS custom property--colour: #1D3FD4;

Brightness & contrast

Relative luminance0.0857WCAG 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 7.74:1
Contrast with white7.74:1WCAG normal text: AAA
Contrast with black2.71:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#E2C02B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005BD8no red cones; affects about 1% of men; ΔE 20.6 from the original
Deuteranopia#004AD1no green cones; the most common form, about 1% of men; ΔE 10.3 from the original
Tritanopia#006985no blue cones; rare, and affects men and women equally; ΔE 82 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.74:1WCAG large text: AAA
Contrast with black, large text2.71:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 21.9Dark blue · ΔE 23.4Slate blue · ΔE 24.8Royal blue · ΔE 26Navy · ΔE 26.3Blue violet · ΔE 26.4
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.86, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D4B21D
Analogous#1D9BD4, #561DD4
Triadic#D41D3F, #3FD41D
Split complementary#D4561D, #9BD41D
Tetradic#D41D9B, #D4B21D, #1DD456

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6CFF7
Lighter +30%#99A9F1
Lighter +20%#6C84EB
Lighter +10%#3F5EE5
Darker −10%#1732A7
Darker −20%#11247A
Darker −30%#0B174D
Darker −40%#040A21
More saturated +25%#002DF1
Less saturated −25%#3B52B6

Channel breakdown

R29
G63
B212
Red29 (11.4%)
Green63 (24.7%)
Blue212 (83.1%)
Hue228.85°
Saturation (HSL)75.93%
Lightness47.25%
Dominant channelBlue
Hex per channelR 1D · G 3F · B D4

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Every value on this page was computed from “1d3fd4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.