Nerdulator> put something in

Recognised as Colour

#1837C9

  • #1837C9
  • Blue
  • Dark
  • Nearest: Dark blue

#1837C9 is a blue with RGB values 24, 55, 201 and HSL 229°, 79%, 44%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1837C9#1837C9
HEX#1837C9
RGBrgb(24, 55, 201)
RGB (0–1)0.0941, 0.2157, 0.7882
RGB percentages9.4%, 21.6%, 78.8%
HSLhsl(229.5, 78.7%, 44.1%)
HSV / HSBhsv(229.5, 88.1%, 78.8%)
CMYK88.1%, 72.6%, 0%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,587,145
CSS custom property--colour: #1837C9;

Brightness & contrast

Relative luminance0.07144WCAG 2.x, 0 is black and 1 is white
Perceived brightness81 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.65:1
Contrast with white8.65:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#E7C836

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0054CDno red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#0043C6no green cones; the most common form, about 1% of men; ΔE 10.9 from the original
Tritanopia#00627Dno blue cones; rare, and affects men and women equally; ΔE 81.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.65:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail

Named colours

Dark blue · ΔE 20Navy · ΔE 23Medium slateblue · ΔE 23.7Slate blue · ΔE 25.3Blue violet · ΔE 26.6Medium blue · ΔE 27.1
Nearest named CSS colourDark blue (#00008B)ΔE 20.03, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C9AA18
Analogous#188FC9, #5218C9
Triadic#C91837, #37C918
Split complementary#C95218, #8FC918
Tetradic#C9188F, #C9AA18, #18C952

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B7C2F6
Lighter +30%#899BF1
Lighter +20%#5C75EB
Lighter +10%#2E4EE6
Darker −10%#132B9B
Darker −20%#0D1E6E
Darker −30%#081240
Darker −40%#020513
More saturated +25%#0027E1
Less saturated −25%#3449AD

Channel breakdown

R24
G55
B201
Red24 (9.4%)
Green55 (21.6%)
Blue201 (78.8%)
Hue229.49°
Saturation (HSL)78.67%
Lightness44.12%
Dominant channelBlue
Hex per channelR 18 · G 37 · B C9

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 “1837c9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.