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Recognised as Colour

#3C78B6

  • #3C78B6
  • Blue
  • Dark
  • Nearest: Steel blue

#3C78B6 is a blue with RGB values 60, 120, 182 and HSL 210°, 50%, 47%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3C78B6#3C78B6
HEX#3C78B6
RGBrgb(60, 120, 182)
RGB (0–1)0.2353, 0.4706, 0.7137
RGB percentages23.5%, 47.1%, 71.4%
HSLhsl(210.5, 50.4%, 47.5%)
HSV / HSBhsv(210.5, 67%, 71.4%)
CMYK67%, 34.1%, 0%, 28.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,963,062
CSS custom property--colour: #3C78B6;

Brightness & contrast

Relative luminance0.17771WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.61:1
Contrast with white4.61:1WCAG normal text: AA
Contrast with black4.55:1WCAG normal text: AA
Greyscale equivalent#707070
Inverted#C38749

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5D7BB9no red cones; affects about 1% of men; ΔE 7 from the original
Deuteranopia#4C70B5no green cones; the most common form, about 1% of men; ΔE 8 from the original
Tritanopia#00868Eno blue cones; rare, and affects men and women equally; ΔE 37.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.61:1WCAG large text: AAA
Contrast with black, large text4.55:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.6Cornflower blue · ΔE 18.8Slate grey · ΔE 28.3Light slate grey · ΔE 28.3Dodgerblue · ΔE 28.4Deep skyblue · ΔE 30
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.55, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B67A3C
Analogous#3CB5B6, #3D3CB6
Triadic#B63C78, #78B63C
Split complementary#B63D3C, #B5B63C
Tetradic#B63CB5, #B67A3C, #3CB63D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CFDFEF
Lighter +30%#A9C5E2
Lighter +20%#82ABD6
Lighter +10%#5C92C9
Darker −10%#2F5F90
Darker −20%#234569
Darker −30%#162C43
Darker −40%#09131D
More saturated +25%#1E78D4
Less saturated −25%#5A7898

Channel breakdown

R60
G120
B182
Red60 (23.5%)
Green120 (47.1%)
Blue182 (71.4%)
Hue210.49°
Saturation (HSL)50.41%
Lightness47.45%
Dominant channelBlue
Hex per channelR 3C · G 78 · B B6

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Every value on this page was computed from “3c78b6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.