Nerdulator> put something in

Colour

#001F66

  • #001F66
  • Blue
  • Dark
  • Nearest: Midnight blue

#001F66 is a blue with RGB values 0, 31, 102 and HSL 222°, 100%, 20%. It is a dark colour, so white text on it reaches 15.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001F66#001F66
HEX#001F66
RGBrgb(0, 31, 102)
RGB (0–1)0, 0.1216, 0.4
RGB percentages0%, 12.2%, 40%
HSLhsl(221.8, 100%, 20%)
HSV / HSBhsv(221.8, 100%, 40%)
CMYK100%, 69.6%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,038
CSS custom property--colour: #001F66;

Brightness & contrast

Relative luminance0.01939WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.13:1
Contrast with white15.13:1WCAG normal text: AAA
Contrast with black1.39:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#FFE099

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002B68no red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#002165no green cones; the most common form, about 1% of men; ΔE 2.4 from the original
Tritanopia#00323Fno blue cones; rare, and affects men and women equally; ΔE 44.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.13:1WCAG large text: AAA
Contrast with black, large text1.39:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.4Dark slateblue · ΔE 16.4Rebecca purple · ΔE 27.8Indigo · ΔE 31.8Navy · ΔE 33Slate blue · ΔE 36.1
Nearest named CSS colourMidnight blue (#191970)ΔE 11.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#664700
Analogous#005266, #140066
Triadic#66001F, #1F6600
Split complementary#661400, #526600
Tetradic#660052, #664700, #006614

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3371FF
Lighter +30%#004EFF
Lighter +20%#003ECC
Lighter +10%#002F99
Darker −10%#001033
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F66
Less saturated −25%#0D2459

Channel breakdown

R0
G31
B102
Red0 (0%)
Green31 (12.2%)
Blue102 (40%)
Hue221.76°
Saturation (HSL)100%
Lightness20%
Dominant channelBlue
Hex per channelR 00 · G 1F · B 66

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 “001f66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.