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Colour

#381CFF

  • #381CFF
  • Blue
  • Dark
  • Nearest: Blue

#381CFF is a blue with RGB values 56, 28, 255 and HSL 247°, 100%, 55%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Blue.

Colour values

#381CFF#381CFF
HEX#381CFF
RGBrgb(56, 28, 255)
RGB (0–1)0.2196, 0.1098, 1
RGB percentages22%, 11%, 100%
HSLhsl(247.4, 100%, 55.5%)
HSV / HSBhsv(247.4, 89%, 100%)
CMYK78%, 89%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,677,439
CSS custom property--colour: #381CFF;

Brightness & contrast

Relative luminance0.08891WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.56:1
Contrast with white7.56:1WCAG normal text: AAA
Contrast with black2.78:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#C7E300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005EFFno red cones; affects about 1% of men; ΔE 39.7 from the original
Deuteranopia#0049FBno green cones; the most common form, about 1% of men; ΔE 25.9 from the original
Tritanopia#006E98no blue cones; rare, and affects men and women equally; ΔE 111.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.56:1WCAG large text: AAA
Contrast with black, large text2.78:1WCAG large text: Fail

Named colours

Blue · ΔE 8.1Medium blue · ΔE 16.8Blue violet · ΔE 28.4Dark violet · ΔE 31.9Dark orchid · ΔE 43.7Dark blue · ΔE 46.3
Nearest named CSS colourBlue (#0000FF)ΔE 8.15, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E3FF1C
Analogous#1C71FF, #AA1CFF
Triadic#FF381C, #1CFF38
Split complementary#FFAA1C, #71FF1C
Tetradic#FF1C72, #E3FF1C, #1CFFAA

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBE8FF
Lighter +30%#BEB5FF
Lighter +20%#9182FF
Lighter +10%#654FFF
Darker −10%#1D00E8
Darker −20%#1600B5
Darker −30%#100082
Darker −40%#0A004F
More saturated +25%#381CFF
Less saturated −25%#4D38E3

Channel breakdown

R56
G28
B255
Red56 (22%)
Green28 (11%)
Blue255 (100%)
Hue247.4°
Saturation (HSL)100%
Lightness55.49%
Dominant channelBlue
Hex per channelR 38 · G 1C · B FF

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Every value on this page was computed from “381cff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.