Nerdulator> put something in

Recognised as Colour

#1F1BB5

  • #1F1BB5
  • Blue
  • Dark
  • Nearest: Dark blue

#1F1BB5 is a blue with RGB values 31, 27, 181 and HSL 242°, 74%, 41%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1F1BB5#1F1BB5
HEX#1F1BB5
RGBrgb(31, 27, 181)
RGB (0–1)0.1216, 0.1059, 0.7098
RGB percentages12.2%, 10.6%, 71%
HSLhsl(241.6, 74%, 40.8%)
HSV / HSBhsv(241.6, 85.1%, 71%)
CMYK82.9%, 85.1%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,038,709
CSS custom property--colour: #1F1BB5;

Brightness & contrast

Relative luminance0.04411WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.16:1
Contrast with white11.16:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#E0E44A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0043B9no red cones; affects about 1% of men; ΔE 26.5 from the original
Deuteranopia#0033B3no green cones; the most common form, about 1% of men; ΔE 16.6 from the original
Tritanopia#004F6Bno blue cones; rare, and affects men and women equally; ΔE 84.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.16:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark blue · ΔE 13.8Navy · ΔE 18.5Medium blue · ΔE 19.6Blue violet · ΔE 23.7Indigo · ΔE 24.5Dark orchid · ΔE 27.7
Nearest named CSS colourDark blue (#00008B)ΔE 13.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B1B51B
Analogous#1B64B5, #6C1BB5
Triadic#B51F1B, #1BB51F
Split complementary#B56C1B, #64B51B
Tetradic#B51B64, #B1B51B, #1BB56C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACAAF2
Lighter +30%#807DEC
Lighter +20%#5551E5
Lighter +10%#2925DE
Darker −10%#171489
Darker −20%#100E5C
Darker −30%#080730
Darker −40%#010103
More saturated +25%#0601CF
Less saturated −25%#38359B

Channel breakdown

R31
G27
B181
Red31 (12.2%)
Green27 (10.6%)
Blue181 (71%)
Hue241.56°
Saturation (HSL)74.04%
Lightness40.78%
Dominant channelBlue
Hex per channelR 1F · G 1B · B B5

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 “1f1bb5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.