Nerdulator> put something in

Recognised as Colour

#33399A

  • #33399A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#33399A is a blue with RGB values 51, 57, 154 and HSL 237°, 50%, 40%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#33399A#33399A
HEX#33399A
RGBrgb(51, 57, 154)
RGB (0–1)0.2, 0.2235, 0.6039
RGB percentages20%, 22.4%, 60.4%
HSLhsl(236.5, 50.2%, 40.2%)
HSV / HSBhsv(236.5, 66.9%, 60.4%)
CMYK66.9%, 63%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,357,082
CSS custom property--colour: #33399A;

Brightness & contrast

Relative luminance0.05963WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.58:1
Contrast with white9.58:1WCAG normal text: AAA
Contrast with black2.19:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#CCC665

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004A9Dno red cones; affects about 1% of men; ΔE 15.7 from the original
Deuteranopia#004198no green cones; the most common form, about 1% of men; ΔE 11 from the original
Tritanopia#005164no blue cones; rare, and affects men and women equally; ΔE 56.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.58:1WCAG large text: AAA
Contrast with black, large text2.19:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.4Midnight blue · ΔE 14.3Rebecca purple · ΔE 15.2Slate blue · ΔE 17.7Royal blue · ΔE 22Indigo · ΔE 23.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A9433
Analogous#336D9A, #60339A
Triadic#9A3339, #399A33
Split complementary#9A6033, #6D9A33
Tetradic#9A336D, #9A9433, #339A60

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3B6E6
Lighter +30%#8D91D9
Lighter +20%#676CCC
Lighter +10%#4048C0
Darker −10%#262B74
Darker −20%#1A1D4D
Darker −30%#0D0E27
Darker −40%#000001
More saturated +25%#1922B4
Less saturated −25%#4D5080

Channel breakdown

R51
G57
B154
Red51 (20%)
Green57 (22.4%)
Blue154 (60.4%)
Hue236.5°
Saturation (HSL)50.24%
Lightness40.2%
Dominant channelBlue
Hex per channelR 33 · G 39 · B 9A

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “33399a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.