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Colour

#003FC1

  • #003FC1
  • Blue
  • Dark
  • Nearest: Slate blue

#003FC1 is a blue with RGB values 0, 63, 193 and HSL 220°, 100%, 38%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#003FC1#003FC1
HEX#003FC1
RGBrgb(0, 63, 193)
RGB (0–1)0, 0.2471, 0.7569
RGB percentages0%, 24.7%, 75.7%
HSLhsl(220.4, 100%, 37.8%)
HSV / HSBhsv(220.4, 100%, 75.7%)
CMYK100%, 67.4%, 0%, 24.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,321
CSS custom property--colour: #003FC1;

Brightness & contrast

Relative luminance0.07405WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.46:1
Contrast with white8.46:1WCAG normal text: AAA
Contrast with black2.48:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#FFC03E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0056C5no red cones; affects about 1% of men; ΔE 17.1 from the original
Deuteranopia#0045BFno green cones; the most common form, about 1% of men; ΔE 5.9 from the original
Tritanopia#00637Bno blue cones; rare, and affects men and women equally; ΔE 73.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.46:1WCAG large text: AAA
Contrast with black, large text2.48:1WCAG large text: Fail

Named colours

Slate blue · ΔE 18.7Royal blue · ΔE 19.4Medium slateblue · ΔE 20.9Dark blue · ΔE 22.8Navy · ΔE 23.6Rebecca purple · ΔE 25.3
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 18.75, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C18200
Analogous#00A0C1, #2100C1
Triadic#C1003F, #3FC100
Split complementary#C12100, #A0C100
Tetradic#C100A0, #C18200, #00C121

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8EB3FF
Lighter +30%#5B91FF
Lighter +20%#286EFF
Lighter +10%#0050F4
Darker −10%#002E8E
Darker −20%#001E5B
Darker −30%#000D28
Darker −40%#000000
More saturated +25%#003FC1
Less saturated −25%#1847A9

Channel breakdown

R0
G63
B193
Red0 (0%)
Green63 (24.7%)
Blue193 (75.7%)
Hue220.41°
Saturation (HSL)100%
Lightness37.84%
Dominant channelBlue
Hex per channelR 00 · G 3F · B C1

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Every value on this page was computed from “003fc1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.