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Recognised as Colour

#687BA7

  • #687BA7
  • Blue
  • Dark
  • Nearest: Steel blue

#687BA7 is a blue with RGB values 104, 123, 167 and HSL 222°, 26%, 53%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#687BA7#687BA7
HEX#687BA7
RGBrgb(104, 123, 167)
RGB (0–1)0.4078, 0.4824, 0.6549
RGB percentages40.8%, 48.2%, 65.5%
HSLhsl(221.9, 26.4%, 53.1%)
HSV / HSBhsv(221.9, 37.7%, 65.5%)
CMYK37.7%, 26.3%, 0%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,847,399
CSS custom property--colour: #687BA7;

Brightness & contrast

Relative luminance0.19899WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.98:1
Contrast with white4.22:1WCAG normal text: Fail
Contrast with black4.98:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#978458

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C7EA9no red cones; affects about 1% of men; ΔE 1.4 from the original
Deuteranopia#6679A6no green cones; the most common form, about 1% of men; ΔE 1 from the original
Tritanopia#54848Ano blue cones; rare, and affects men and women equally; ΔE 25.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.22:1WCAG large text: AA
Contrast with black, large text4.98:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.6Slate grey · ΔE 16.5Light slate grey · ΔE 16.5Gray · ΔE 26.1Cornflower blue · ΔE 26.2Dim grey · ΔE 27.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A79468
Analogous#689BA7, #7568A7
Triadic#A7687B, #7BA768
Split complementary#A77568, #9AA768
Tetradic#A7689B, #A79468, #68A775

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9ECF2
Lighter +30%#C9D0DF
Lighter +20%#A8B3CD
Lighter +10%#8897BA
Darker −10%#51628B
Darker −20%#3E4C6B
Darker −30%#2B354B
Darker −40%#191E2A
More saturated +25%#4A6FC5
Less saturated −25%#868789

Channel breakdown

R104
G123
B167
Red104 (40.8%)
Green123 (48.2%)
Blue167 (65.5%)
Hue221.9°
Saturation (HSL)26.36%
Lightness53.14%
Dominant channelBlue
Hex per channelR 68 · G 7B · B A7

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Every value on this page was computed from “687ba7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.