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Recognised as Colour

#4033CB

  • #4033CB
  • Blue
  • Dark
  • Nearest: Dark blue

#4033CB is a blue with RGB values 64, 51, 203 and HSL 245°, 60%, 50%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#4033CB#4033CB
HEX#4033CB
RGBrgb(64, 51, 203)
RGB (0–1)0.251, 0.2, 0.7961
RGB percentages25.1%, 20%, 79.6%
HSLhsl(245.1, 59.8%, 49.8%)
HSV / HSBhsv(245.1, 74.9%, 79.6%)
CMYK68.5%, 74.9%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,207,563
CSS custom property--colour: #4033CB;

Brightness & contrast

Relative luminance0.07769WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.22:1
Contrast with white8.22:1WCAG normal text: AAA
Contrast with black2.55:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#BFCC34

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055CFno red cones; affects about 1% of men; ΔE 25.5 from the original
Deuteranopia#0048C8no green cones; the most common form, about 1% of men; ΔE 18.6 from the original
Tritanopia#005F7Dno blue cones; rare, and affects men and women equally; ΔE 82.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.22:1WCAG large text: AAA
Contrast with black, large text2.55:1WCAG large text: Fail

Named colours

Dark blue · ΔE 20.2Blue violet · ΔE 20.6Dark orchid · ΔE 23.4Navy · ΔE 23.8Medium slateblue · ΔE 23.8Medium blue · ΔE 23.8
Nearest named CSS colourDark blue (#00008B)ΔE 20.16, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BECB33
Analogous#3372CB, #8C33CB
Triadic#CB4033, #33CB40
Split complementary#CB8C33, #72CB33
Tetradic#CB3372, #BECB33, #33CB8C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8D5F5
Lighter +30%#B2ADEA
Lighter +20%#8C84E0
Lighter +10%#665BD6
Darker −10%#3329A2
Darker −20%#261F79
Darker −30%#191451
Darker −40%#0D0A28
More saturated +25%#2613EB
Less saturated −25%#5A53AB

Channel breakdown

R64
G51
B203
Red64 (25.1%)
Green51 (20%)
Blue203 (79.6%)
Hue245.13°
Saturation (HSL)59.84%
Lightness49.8%
Dominant channelBlue
Hex per channelR 40 · G 33 · B CB

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Every value on this page was computed from “4033cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.