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Recognised as Colour

#3D21DF

  • #3D21DF
  • Blue
  • Dark
  • Nearest: Medium blue

#3D21DF is a blue with RGB values 61, 33, 223 and HSL 249°, 75%, 50%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#3D21DF#3D21DF
HEX#3D21DF
RGBrgb(61, 33, 223)
RGB (0–1)0.2392, 0.1294, 0.8745
RGB percentages23.9%, 12.9%, 87.5%
HSLhsl(248.8, 74.8%, 50.2%)
HSV / HSBhsv(248.8, 85.2%, 87.5%)
CMYK72.6%, 85.2%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,006,367
CSS custom property--colour: #3D21DF;

Brightness & contrast

Relative luminance0.07408WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.46:1
Contrast with white8.46:1WCAG normal text: AAA
Contrast with black2.48:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#C2DE20

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055E4no red cones; affects about 1% of men; ΔE 32.4 from the original
Deuteranopia#0044DCno green cones; the most common form, about 1% of men; ΔE 23.1 from the original
Tritanopia#006185no blue cones; rare, and affects men and women equally; ΔE 97.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.46:1WCAG large text: AAA
Contrast with black, large text2.48:1WCAG large text: Fail

Named colours

Medium blue · ΔE 8.5Blue violet · ΔE 17.8Dark violet · ΔE 22.9Blue · ΔE 23.7Dark blue · ΔE 30.7Dark orchid · ΔE 30.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 8.48, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C3DF21
Analogous#2164DF, #9C21DF
Triadic#DF3D21, #21DF3D
Split complementary#DF9C21, #64DF21
Tetradic#DF2164, #C3DF21, #21DF9C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9D3F9
Lighter +30%#B2A7F2
Lighter +20%#8B7AEC
Lighter +10%#644EE5
Darker −10%#301AB3
Darker −20%#241387
Darker −30%#180D5A
Darker −40%#0C072D
More saturated +25%#2701FF
Less saturated −25%#5341BF

Channel breakdown

R61
G33
B223
Red61 (23.9%)
Green33 (12.9%)
Blue223 (87.5%)
Hue248.84°
Saturation (HSL)74.8%
Lightness50.2%
Dominant channelBlue
Hex per channelR 3D · G 21 · B DF

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Every value on this page was computed from “3d21df” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.