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Recognised as Colour

#687AE1

  • #687AE1
  • Blue
  • Dark
  • Nearest: Royal blue

#687AE1 is a blue with RGB values 104, 122, 225 and HSL 231°, 67%, 65%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#687AE1#687AE1
HEX#687AE1
RGBrgb(104, 122, 225)
RGB (0–1)0.4078, 0.4784, 0.8824
RGB percentages40.8%, 47.8%, 88.2%
HSLhsl(231.1, 66.9%, 64.5%)
HSV / HSBhsv(231.1, 53.8%, 88.2%)
CMYK53.8%, 45.8%, 0%, 11.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,847,201
CSS custom property--colour: #687AE1;

Brightness & contrast

Relative luminance0.22298WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.46:1
Contrast with white3.85:1WCAG normal text: Fail
Contrast with black5.46:1WCAG normal text: AA
Greyscale equivalent#7E7E7E
Inverted#97851E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4C87E5no red cones; affects about 1% of men; ΔE 12 from the original
Deuteranopia#3D7DDFno green cones; the most common form, about 1% of men; ΔE 10.1 from the original
Tritanopia#2B91A3no blue cones; rare, and affects men and women equally; ΔE 58.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.85:1WCAG large text: AA
Contrast with black, large text5.46:1WCAG large text: AAA

Named colours

Royal blue · ΔE 13Medium purple · ΔE 15.1Dodgerblue · ΔE 16Cornflower blue · ΔE 16.1Slate blue · ΔE 16.6Medium slateblue · ΔE 21.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E1CF68
Analogous#68B6E1, #9368E1
Triadic#E1687A, #7AE168
Split complementary#E19368, #B6E168
Tetradic#E168B6, #E1CF68, #68E193

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E8EAFA
Lighter +20%#BDC5F2
Lighter +10%#939FE9
Darker −10%#3D55D9
Darker −20%#263CBD
Darker −30%#1D2F93
Darker −40%#152168
More saturated +25%#516AF8
Less saturated −25%#7F8ACA

Channel breakdown

R104
G122
B225
Red104 (40.8%)
Green122 (47.8%)
Blue225 (88.2%)
Hue231.07°
Saturation (HSL)66.85%
Lightness64.51%
Dominant channelBlue
Hex per channelR 68 · G 7A · B E1

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Every value on this page was computed from “687ae1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.