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Recognised as Colour

#678BC3

  • #678BC3
  • Blue
  • Dark
  • Nearest: Steel blue

#678BC3 is a blue with RGB values 103, 139, 195 and HSL 217°, 43%, 58%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#678BC3#678BC3
HEX#678BC3
RGBrgb(103, 139, 195)
RGB (0–1)0.4039, 0.5451, 0.7647
RGB percentages40.4%, 54.5%, 76.5%
HSLhsl(216.5, 43.4%, 58.4%)
HSV / HSBhsv(216.5, 47.2%, 76.5%)
CMYK47.2%, 28.7%, 0%, 23.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,785,987
CSS custom property--colour: #678BC3;

Brightness & contrast

Relative luminance0.25289WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.06:1
Contrast with white3.47:1WCAG normal text: Fail
Contrast with black6.06:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#98743C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#768FC5no red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#6B86C2no green cones; the most common form, about 1% of men; ΔE 4 from the original
Tritanopia#41979Fno blue cones; rare, and affects men and women equally; ΔE 33.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.47:1WCAG large text: AA
Contrast with black, large text6.06:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.5Cornflower blue · ΔE 18.2Light slate grey · ΔE 22.5Slate grey · ΔE 23.4Light skyblue · ΔE 26.6Deep skyblue · ΔE 27.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.46, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C39F67
Analogous#67B9C3, #7167C3
Triadic#C3678B, #8BC367
Split complementary#C37167, #B9C367
Tetradic#C367B9, #C39F67, #67C371

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F9FBFD
Lighter +30%#D5DFEE
Lighter +20%#B0C3E0
Lighter +10%#8CA7D1
Darker −10%#4670B1
Darker −20%#37598D
Darker −30%#294268
Darker −40%#1B2B43
More saturated +25%#4C85DD
Less saturated −25%#8291A8

Channel breakdown

R103
G139
B195
Red103 (40.4%)
Green139 (54.5%)
Blue195 (76.5%)
Hue216.52°
Saturation (HSL)43.4%
Lightness58.43%
Dominant channelBlue
Hex per channelR 67 · G 8B · B C3

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Every value on this page was computed from “678bc3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.