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Colour

#388AC4

  • #388AC4
  • Blue
  • Dark
  • Nearest: Steel blue

#388AC4 is a blue with RGB values 56, 138, 196 and HSL 205°, 56%, 49%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#388AC4#388AC4
HEX#388AC4
RGBrgb(56, 138, 196)
RGB (0–1)0.2196, 0.5412, 0.7686
RGB percentages22%, 54.1%, 76.9%
HSLhsl(204.9, 55.6%, 49.4%)
HSV / HSBhsv(204.9, 71.4%, 76.9%)
CMYK71.4%, 29.6%, 0%, 23.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,705,540
CSS custom property--colour: #388AC4;

Brightness & contrast

Relative luminance0.23003WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.6:1
Contrast with white3.75:1WCAG normal text: Fail
Contrast with black5.6:1WCAG normal text: AA
Greyscale equivalent#7D7D7D
Inverted#C7753B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F8BC7no red cones; affects about 1% of men; ΔE 12.4 from the original
Deuteranopia#5C7EC3no green cones; the most common form, about 1% of men; ΔE 13.8 from the original
Tritanopia#00989Eno blue cones; rare, and affects men and women equally; ΔE 35.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.75:1WCAG large text: AA
Contrast with black, large text5.6:1WCAG large text: AAA

Named colours

Steel blue · ΔE 5.9Cornflower blue · ΔE 20.4Deep skyblue · ΔE 21.9Light slate grey · ΔE 26.4Light skyblue · ΔE 26.7Slate grey · ΔE 27
Nearest named CSS colourSteel blue (#4682B4)ΔE 5.93, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C47238
Analogous#38C4B8, #3844C4
Triadic#C4388A, #8AC438
Split complementary#C43844, #C4B838
Tetradic#B838C4, #C47238, #44C438

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D5E7F3
Lighter +30%#ADCFE8
Lighter +20%#86B8DC
Lighter +10%#5EA1D1
Darker −10%#2D6E9C
Darker −20%#215275
Darker −30%#16364D
Darker −40%#0B1A25
More saturated +25%#188FE4
Less saturated −25%#5885A5

Channel breakdown

R56
G138
B196
Red56 (22%)
Green138 (54.1%)
Blue196 (76.9%)
Hue204.86°
Saturation (HSL)55.56%
Lightness49.41%
Dominant channelBlue
Hex per channelR 38 · G 8A · B C4

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Every value on this page was computed from “388ac4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.