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Recognised as Colour

#4178CC

  • #4178CC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#4178CC is a blue with RGB values 65, 120, 204 and HSL 216°, 58%, 53%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#4178CC#4178CC
HEX#4178CC
RGBrgb(65, 120, 204)
RGB (0–1)0.2549, 0.4706, 0.8
RGB percentages25.5%, 47.1%, 80%
HSLhsl(216.3, 57.7%, 52.7%)
HSV / HSBhsv(216.3, 68.1%, 80%)
CMYK68.1%, 41.2%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,290,764
CSS custom property--colour: #4178CC;

Brightness & contrast

Relative luminance0.18916WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.78:1
Contrast with white4.39:1WCAG normal text: Fail
Contrast with black4.78:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#BE8733

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#517FCFno red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#3B72CAno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#008B98no blue cones; rare, and affects men and women equally; ΔE 48.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.39:1WCAG large text: AA
Contrast with black, large text4.78:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 11.3Dodgerblue · ΔE 16.9Steel blue · ΔE 21.5Royal blue · ΔE 23.7Dark slateblue · ΔE 26.8Medium purple · ΔE 27.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 11.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CC9541
Analogous#41BECC, #4F41CC
Triadic#CC4178, #78CC41
Split complementary#CC4F41, #BECC41
Tetradic#CC41BE, #CC9541, #41CC4F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E2EAF7
Lighter +30%#BACEEC
Lighter +20%#91B1E2
Lighter +10%#6995D7
Darker −10%#2E60AC
Darker −20%#234984
Darker −30%#19335B
Darker −40%#0E1D33
More saturated +25%#2372EA
Less saturated −25%#5F7EAE

Channel breakdown

R65
G120
B204
Red65 (25.5%)
Green120 (47.1%)
Blue204 (80%)
Hue216.26°
Saturation (HSL)57.68%
Lightness52.75%
Dominant channelBlue
Hex per channelR 41 · G 78 · B CC

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Every value on this page was computed from “4178cc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.