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Recognised as Colour

#687EB3

  • #687EB3
  • Blue
  • Dark
  • Nearest: Steel blue

#687EB3 is a blue with RGB values 104, 126, 179 and HSL 222°, 33%, 55%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#687EB3#687EB3
HEX#687EB3
RGBrgb(104, 126, 179)
RGB (0–1)0.4078, 0.4941, 0.702
RGB percentages40.8%, 49.4%, 70.2%
HSLhsl(222.4, 33%, 55.5%)
HSV / HSBhsv(222.4, 41.9%, 70.2%)
CMYK41.9%, 29.6%, 0%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,848,179
CSS custom property--colour: #687EB3;

Brightness & contrast

Relative luminance0.21119WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.22:1
Contrast with white4.02:1WCAG normal text: Fail
Contrast with black5.22:1WCAG normal text: AA
Greyscale equivalent#7D7D7D
Inverted#97814C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6B82B5no red cones; affects about 1% of men; ΔE 2 from the original
Deuteranopia#647CB2no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#4F8991no blue cones; rare, and affects men and women equally; ΔE 30.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.02:1WCAG large text: AA
Contrast with black, large text5.22:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.2Cornflower blue · ΔE 21Light slate grey · ΔE 21.3Slate grey · ΔE 21.5Light steelblue · ΔE 30.5Gray · ΔE 31.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.2, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B39D68
Analogous#68A4B3, #7768B3
Triadic#B3687E, #7EB368
Split complementary#B37768, #A4B368
Tetradic#B368A4, #B39D68, #68B377

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F0F2F7
Lighter +30%#CED5E6
Lighter +20%#ACB8D5
Lighter +10%#8A9BC4
Darker −10%#4E649A
Darker −20%#3D4E78
Darker −30%#2C3856
Darker −40%#1A2235
More saturated +25%#4C72CF
Less saturated −25%#848A97

Channel breakdown

R104
G126
B179
Red104 (40.8%)
Green126 (49.4%)
Blue179 (70.2%)
Hue222.4°
Saturation (HSL)33.04%
Lightness55.49%
Dominant channelBlue
Hex per channelR 68 · G 7E · B B3

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Every value on this page was computed from “687eb3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.