Nerdulator> put something in

Recognised as Colour

#281FA5

  • #281FA5
  • Blue
  • Dark
  • Nearest: Dark blue

#281FA5 is a blue with RGB values 40, 31, 165 and HSL 244°, 68%, 38%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#281FA5#281FA5
HEX#281FA5
RGBrgb(40, 31, 165)
RGB (0–1)0.1569, 0.1216, 0.6471
RGB percentages15.7%, 12.2%, 64.7%
HSLhsl(244, 68.4%, 38.4%)
HSV / HSBhsv(244, 81.2%, 64.7%)
CMYK75.8%, 81.2%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,629,541
CSS custom property--colour: #281FA5;

Brightness & contrast

Relative luminance0.04148WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.48:1
Contrast with white11.48:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#D7E05A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0040A9no red cones; affects about 1% of men; ΔE 23.5 from the original
Deuteranopia#0033A3no green cones; the most common form, about 1% of men; ΔE 15.8 from the original
Tritanopia#004963no blue cones; rare, and affects men and women equally; ΔE 74.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.48:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail

Named colours

Dark blue · ΔE 9.9Navy · ΔE 12Indigo · ΔE 16.7Rebecca purple · ΔE 24Midnight blue · ΔE 26.4Slate blue · ΔE 26.6
Nearest named CSS colourDark blue (#00008B)ΔE 9.86, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9CA51F
Analogous#1F59A5, #6B1FA5
Triadic#A5281F, #1FA528
Split complementary#A56B1F, #59A51F
Tetradic#A51F59, #9CA51F, #1FA56B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7A2EE
Lighter +30%#7F77E6
Lighter +20%#564DDD
Lighter +10%#3227D0
Darker −10%#1E177A
Darker −20%#130F4F
Darker −30%#090724
Darker −40%#000000
More saturated +25%#1307BE
Less saturated −25%#3D388D

Channel breakdown

R40
G31
B165
Red40 (15.7%)
Green31 (12.2%)
Blue165 (64.7%)
Hue244.03°
Saturation (HSL)68.37%
Lightness38.43%
Dominant channelBlue
Hex per channelR 28 · G 1F · B A5

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 “281fa5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.