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Recognised as Colour

#378CE2

  • #378CE2
  • Blue
  • Dark
  • Nearest: Cornflower blue

#378CE2 is a blue with RGB values 55, 140, 226 and HSL 210°, 75%, 55%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#378CE2#378CE2
HEX#378CE2
RGBrgb(55, 140, 226)
RGB (0–1)0.2157, 0.549, 0.8863
RGB percentages21.6%, 54.9%, 88.6%
HSLhsl(210.2, 74.7%, 55.1%)
HSV / HSBhsv(210.2, 75.7%, 88.6%)
CMYK75.7%, 38.1%, 0%, 11.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,640,546
CSS custom property--colour: #378CE2;

Brightness & contrast

Relative luminance0.25059WCAG 2.x, 0 is black and 1 is white
Perceived brightness135 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.01:1
Contrast with white3.49:1WCAG normal text: Fail
Contrast with black6.01:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#C8731D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6392E5no red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#4982E0no green cones; the most common form, about 1% of men; ΔE 8.5 from the original
Tritanopia#00A0ACno blue cones; rare, and affects men and women equally; ΔE 48.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.49:1WCAG large text: AA
Contrast with black, large text6.01:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 7.5Dodgerblue · ΔE 14.1Steel blue · ΔE 20.8Deep skyblue · ΔE 27.7Royal blue · ΔE 28.3Medium purple · ΔE 33.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 7.53, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E28D37
Analogous#37E2E2, #3737E2
Triadic#E2378C, #8CE237
Split complementary#E23837, #E2E237
Tetradic#E237E2, #E28D37, #37E238

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9F2FC
Lighter +30%#BDD9F5
Lighter +20%#90BFEF
Lighter +10%#64A6E8
Darker −10%#1D72C9
Darker −20%#17599C
Darker −30%#104070
Darker −40%#0A2643
More saturated +25%#1A8CFF
Less saturated −25%#548CC5

Channel breakdown

R55
G140
B226
Red55 (21.6%)
Green140 (54.9%)
Blue226 (88.6%)
Hue210.18°
Saturation (HSL)74.67%
Lightness55.1%
Dominant channelBlue
Hex per channelR 37 · G 8C · B E2

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Every value on this page was computed from “378ce2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.