Nerdulator> put something in

Recognised as Colour

#00439B

  • #00439B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00439B is a blue with RGB values 0, 67, 155 and HSL 214°, 100%, 30%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00439B#00439B
HEX#00439B
RGBrgb(0, 67, 155)
RGB (0–1)0, 0.2627, 0.6078
RGB percentages0%, 26.3%, 60.8%
HSLhsl(214.1, 100%, 30.4%)
HSV / HSBhsv(214.1, 100%, 60.8%)
CMYK100%, 56.8%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer17,307
CSS custom property--colour: #00439B;

Brightness & contrast

Relative luminance0.06381WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.23:1
Contrast with white9.23:1WCAG normal text: AAA
Contrast with black2.28:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#FFBC64

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004E9Eno red cones; affects about 1% of men; ΔE 8.1 from the original
Deuteranopia#004199no green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#005968no blue cones; rare, and affects men and women equally; ΔE 51.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.23:1WCAG large text: AAA
Contrast with black, large text2.28:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.1Midnight blue · ΔE 19.8Royal blue · ΔE 22.8Slate blue · ΔE 23.5Rebecca purple · ΔE 25.1Medium purple · ΔE 30.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.06, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B5800
Analogous#00919B, #0A009B
Triadic#9B0043, #439B00
Split complementary#9B0B00, #919B00
Tetradic#9B0091, #9B5800, #009B0B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#68A9FF
Lighter +30%#358CFF
Lighter +20%#026FFF
Lighter +10%#0059CE
Darker −10%#002D68
Darker −20%#001735
Darker −30%#000102
Darker −40%#000000
More saturated +25%#00439B
Less saturated −25%#134688

Channel breakdown

R0
G67
B155
Red0 (0%)
Green67 (26.3%)
Blue155 (60.8%)
Hue214.06°
Saturation (HSL)100%
Lightness30.39%
Dominant channelBlue
Hex per channelR 00 · G 43 · B 9B

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 “00439b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.