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Recognised as Colour

#647DFA

  • #647DFA
  • Blue
  • Dark
  • Nearest: Royal blue

#647DFA is a blue with RGB values 100, 125, 250 and HSL 230°, 94%, 69%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#647DFA#647DFA
HEX#647DFA
RGBrgb(100, 125, 250)
RGB (0–1)0.3922, 0.4902, 0.9804
RGB percentages39.2%, 49%, 98%
HSLhsl(230, 93.7%, 68.6%)
HSV / HSBhsv(230, 60%, 98%)
CMYK60%, 50%, 0%, 2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,585,850
CSS custom property--colour: #647DFA;

Brightness & contrast

Relative luminance0.24279WCAG 2.x, 0 is black and 1 is white
Perceived brightness138.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.86:1
Contrast with white3.59:1WCAG normal text: Fail
Contrast with black5.86:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#9B8205

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#388EFEno red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#1081F7no green cones; the most common form, about 1% of men; ΔE 12.6 from the original
Tritanopia#009AB0no blue cones; rare, and affects men and women equally; ΔE 69.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.59:1WCAG large text: AA
Contrast with black, large text5.86:1WCAG large text: AAA

Named colours

Royal blue · ΔE 8.7Medium slateblue · ΔE 13.8Slate blue · ΔE 15.7Medium purple · ΔE 17.7Dodgerblue · ΔE 18.3Cornflower blue · ΔE 25.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.69, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FAE164
Analogous#64C8FA, #9664FA
Triadic#FA647D, #7DFA64
Split complementary#FA9664, #C8FA64
Tetradic#FA64C8, #FAE164, #64FA96

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F8F9FF
Lighter +20%#C7D0FD
Lighter +10%#95A6FC
Darker −10%#3354F8
Darker −20%#082EF0
Darker −30%#0625BF
Darker −40%#051B8D
More saturated +25%#5F7AFF
Less saturated −25%#788AE6

Channel breakdown

R100
G125
B250
Red100 (39.2%)
Green125 (49%)
Blue250 (98%)
Hue230°
Saturation (HSL)93.75%
Lightness68.63%
Dominant channelBlue
Hex per channelR 64 · G 7D · B FA

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Every value on this page was computed from “647dfa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.