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Colour

#3FA1FD

  • #3FA1FD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3FA1FD is a blue with RGB values 63, 161, 253 and HSL 209°, 98%, 62%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3FA1FD#3FA1FD
HEX#3FA1FD
RGBrgb(63, 161, 253)
RGB (0–1)0.2471, 0.6314, 0.9922
RGB percentages24.7%, 63.1%, 99.2%
HSLhsl(209.1, 97.9%, 62%)
HSV / HSBhsv(209.1, 75.1%, 99.2%)
CMYK75.1%, 36.4%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,170,237
CSS custom property--colour: #3FA1FD;

Brightness & contrast

Relative luminance0.33638WCAG 2.x, 0 is black and 1 is white
Perceived brightness153.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.73:1
Contrast with white2.72:1WCAG normal text: Fail
Contrast with black7.73:1WCAG normal text: AAA
Greyscale equivalent#939393
Inverted#C05E02

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#76A6FFno red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#5A95FBno green cones; the most common form, about 1% of men; ΔE 10.8 from the original
Tritanopia#00B7C3no blue cones; rare, and affects men and women equally; ΔE 51.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.72:1WCAG large text: Fail
Contrast with black, large text7.73:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.1Dodgerblue · ΔE 13.5Deep skyblue · ΔE 24Steel blue · ΔE 25.6Royal blue · ΔE 31.7Light skyblue · ΔE 32.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.05, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FD9B3F
Analogous#3FFDFA, #3F42FD
Triadic#FD3FA1, #A1FD3F
Split complementary#FD3F42, #FDFA3F
Tetradic#FA3FFD, #FD9B3F, #42FD3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D6EBFF
Lighter +20%#A4D2FE
Lighter +10%#71BAFE
Darker −10%#0D88FC
Darker −20%#026ED4
Darker −30%#0254A1
Darker −40%#013A6F
More saturated +25%#3DA1FF
Less saturated −25%#57A0E5

Channel breakdown

R63
G161
B253
Red63 (24.7%)
Green161 (63.1%)
Blue253 (99.2%)
Hue209.05°
Saturation (HSL)97.94%
Lightness61.96%
Dominant channelBlue
Hex per channelR 3F · G A1 · B FD

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Every value on this page was computed from “3fa1fd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.