Nerdulator> put something in

Colour

#133F83

  • #133F83
  • Blue
  • Dark
  • Nearest: Dark slateblue

#133F83 is a blue with RGB values 19, 63, 131 and HSL 216°, 75%, 29%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#133F83#133F83
HEX#133F83
RGBrgb(19, 63, 131)
RGB (0–1)0.0745, 0.2471, 0.5137
RGB percentages7.5%, 24.7%, 51.4%
HSLhsl(216.4, 74.7%, 29.4%)
HSV / HSBhsv(216.4, 85.5%, 51.4%)
CMYK85.5%, 51.9%, 0%, 48.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,261,443
CSS custom property--colour: #133F83;

Brightness & contrast

Relative luminance0.05332WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.16:1
Contrast with white10.16:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#ECC07C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#144785no red cones; affects about 1% of men; ΔE 6.1 from the original
Deuteranopia#003D82no green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#00505Ano blue cones; rare, and affects men and women equally; ΔE 42.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.16:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14Midnight blue · ΔE 23.7Rebecca purple · ΔE 31.2Steel blue · ΔE 31.5Slate blue · ΔE 33.2Royal blue · ΔE 33.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.97, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#835713
Analogous#137783, #1F1383
Triadic#83133F, #3F8313
Split complementary#831F13, #778313
Tetradic#831377, #835713, #13831F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#77A5EB
Lighter +30%#4A87E5
Lighter +20%#206ADC
Lighter +10%#1954B0
Darker −10%#0D2A56
Darker −20%#06142A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003B96
Less saturated −25%#264370

Channel breakdown

R19
G63
B131
Red19 (7.5%)
Green63 (24.7%)
Blue131 (51.4%)
Hue216.43°
Saturation (HSL)74.67%
Lightness29.41%
Dominant channelBlue
Hex per channelR 13 · G 3F · B 83

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 “133f83” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.