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Recognised as Colour

#4F21DB

  • #4F21DB
  • Blue
  • Dark
  • Nearest: Medium blue

#4F21DB is a blue with RGB values 79, 33, 219 and HSL 255°, 74%, 49%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#4F21DB#4F21DB
HEX#4F21DB
RGBrgb(79, 33, 219)
RGB (0–1)0.3098, 0.1294, 0.8588
RGB percentages31%, 12.9%, 85.9%
HSLhsl(254.8, 73.8%, 49.4%)
HSV / HSBhsv(254.8, 84.9%, 85.9%)
CMYK63.9%, 84.9%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,186,011
CSS custom property--colour: #4F21DB;

Brightness & contrast

Relative luminance0.07864WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.16:1
Contrast with white8.16:1WCAG normal text: AAA
Contrast with black2.57:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#B0DE24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055E0no red cones; affects about 1% of men; ΔE 32.9 from the original
Deuteranopia#0049D8no green cones; the most common form, about 1% of men; ΔE 27.4 from the original
Tritanopia#005E83no blue cones; rare, and affects men and women equally; ΔE 94.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.16:1WCAG large text: AAA
Contrast with black, large text2.57:1WCAG large text: Fail

Named colours

Medium blue · ΔE 11.1Blue violet · ΔE 14.1Dark violet · ΔE 19.4Dark orchid · ΔE 26.7Blue · ΔE 27Dark blue · ΔE 28.9
Nearest named CSS colourMedium blue (#0000CD)ΔE 11.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ADDB21
Analogous#2150DB, #AC21DB
Triadic#DB4F21, #21DB4F
Split complementary#DBAC21, #50DB21
Tetradic#DB2150, #ADDB21, #21DBAC

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAD0F8
Lighter +30%#B7A4F1
Lighter +20%#9477EB
Lighter +10%#714BE4
Darker −10%#3F1AAF
Darker −20%#2F1482
Darker −30%#1F0D56
Darker −40%#0F062A
More saturated +25%#3F01FB
Less saturated −25%#5F41BB

Channel breakdown

R79
G33
B219
Red79 (31%)
Green33 (12.9%)
Blue219 (85.9%)
Hue254.84°
Saturation (HSL)73.81%
Lightness49.41%
Dominant channelBlue
Hex per channelR 4F · G 21 · B DB

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Every value on this page was computed from “4f21db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.