Nerdulator> put something in

Recognised as Colour

#181EA7

  • #181EA7
  • Blue
  • Dark
  • Nearest: Dark blue

#181EA7 is a blue with RGB values 24, 30, 167 and HSL 237°, 75%, 37%. It is a dark colour, so white text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#181EA7#181EA7
HEX#181EA7
RGBrgb(24, 30, 167)
RGB (0–1)0.0941, 0.1176, 0.6549
RGB percentages9.4%, 11.8%, 65.5%
HSLhsl(237.5, 74.9%, 37.5%)
HSV / HSBhsv(237.5, 85.6%, 65.5%)
CMYK85.6%, 82%, 0%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,580,711
CSS custom property--colour: #181EA7;

Brightness & contrast

Relative luminance0.03913WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.78:1
Contrast with white11.78:1WCAG normal text: AAA
Contrast with black1.78:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#E7E158

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003FABno red cones; affects about 1% of men; ΔE 23.1 from the original
Deuteranopia#0030A5no green cones; the most common form, about 1% of men; ΔE 13.7 from the original
Tritanopia#004A64no blue cones; rare, and affects men and women equally; ΔE 76.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.78:1WCAG large text: AAA
Contrast with black, large text1.78:1WCAG large text: Fail

Named colours

Dark blue · ΔE 9.5Navy · ΔE 12.5Indigo · ΔE 18.9Rebecca purple · ΔE 26.6Medium blue · ΔE 27.9Midnight blue · ΔE 28.2
Nearest named CSS colourDark blue (#00008B)ΔE 9.49, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A7A118
Analogous#1866A7, #5918A7
Triadic#A7181E, #1EA718
Split complementary#A75918, #66A718
Tetradic#A71866, #A7A118, #18A759

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9A9EF1
Lighter +30%#6E73EA
Lighter +20%#4148E4
Lighter +10%#1E26D4
Darker −10%#12167A
Darker −20%#0B0E4E
Darker −30%#050621
Darker −40%#000000
More saturated +25%#0008BF
Less saturated −25%#30348F

Channel breakdown

R24
G30
B167
Red24 (9.4%)
Green30 (11.8%)
Blue167 (65.5%)
Hue237.48°
Saturation (HSL)74.87%
Lightness37.45%
Dominant channelBlue
Hex per channelR 18 · G 1E · B A7

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 “181ea7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.