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Recognised as Colour

#687CFD

  • #687CFD
  • Blue
  • Dark
  • Nearest: Royal blue

#687CFD is a blue with RGB values 104, 124, 253 and HSL 232°, 97%, 70%. 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

#687CFD#687CFD
HEX#687CFD
RGBrgb(104, 124, 253)
RGB (0–1)0.4078, 0.4863, 0.9922
RGB percentages40.8%, 48.6%, 99.2%
HSLhsl(231.9, 97.4%, 70%)
HSV / HSBhsv(231.9, 58.9%, 99.2%)
CMYK58.9%, 51%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,847,741
CSS custom property--colour: #687CFD;

Brightness & contrast

Relative luminance0.2445WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.89:1
Contrast with white3.57:1WCAG normal text: Fail
Contrast with black5.89:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#978302

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#328EFFno red cones; affects about 1% of men; ΔE 18 from the original
Deuteranopia#0181FAno green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#009AB1no blue cones; rare, and affects men and women equally; ΔE 71.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.57:1WCAG large text: AA
Contrast with black, large text5.89:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.7Medium slateblue · ΔE 11.8Slate blue · ΔE 15.5Medium purple · ΔE 18Dodgerblue · ΔE 20.7Cornflower blue · ΔE 27.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.66, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FDE968
Analogous#68C7FD, #9E68FD
Triadic#FD687C, #7CFD68
Split complementary#FD9E68, #C7FD68
Tetradic#FD68C7, #FDE968, #68FD9E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CDD3FE
Lighter +10%#9AA8FE
Darker −10%#3650FC
Darker −20%#0325FC
Darker −30%#031DC9
Darker −40%#021697
More saturated +25%#667BFF
Less saturated −25%#7B8AEA

Channel breakdown

R104
G124
B253
Red104 (40.8%)
Green124 (48.6%)
Blue253 (99.2%)
Hue231.95°
Saturation (HSL)97.39%
Lightness70%
Dominant channelBlue
Hex per channelR 68 · G 7C · B FD

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Every value on this page was computed from “687cfd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.