Nerdulator> put something in

Recognised as Colour

#31509D

  • #31509D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#31509D is a blue with RGB values 49, 80, 157 and HSL 223°, 52%, 40%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#31509D#31509D
HEX#31509D
RGBrgb(49, 80, 157)
RGB (0–1)0.1922, 0.3137, 0.6157
RGB percentages19.2%, 31.4%, 61.6%
HSLhsl(222.8, 52.4%, 40.4%)
HSV / HSBhsv(222.8, 68.8%, 61.6%)
CMYK68.8%, 49%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,231,901
CSS custom property--colour: #31509D;

Brightness & contrast

Relative luminance0.08825WCAG 2.x, 0 is black and 1 is white
Perceived brightness85.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.6:1
Contrast with white7.6:1WCAG normal text: AAA
Contrast with black2.76:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#CEAF62

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2759A0no red cones; affects about 1% of men; ΔE 7 from the original
Deuteranopia#0B4F9Bno green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#00626Fno blue cones; rare, and affects men and women equally; ΔE 46.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.6:1WCAG large text: AAA
Contrast with black, large text2.76:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.4Royal blue · ΔE 25.8Midnight blue · ΔE 26.1Slate blue · ΔE 26.1Cornflower blue · ΔE 27.2Rebecca purple · ΔE 27.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9D7E31
Analogous#31869D, #48319D
Triadic#9D3150, #509D31
Split complementary#9D4831, #869D31
Tetradic#9D3186, #9D7E31, #319D48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B3C2E7
Lighter +30%#8CA3DB
Lighter +20%#6583CF
Lighter +10%#3E64C3
Darker −10%#253C76
Darker −20%#19284F
Darker −30%#0D1528
Darker −40%#000102
More saturated +25%#1745B7
Less saturated −25%#4B5B83

Channel breakdown

R49
G80
B157
Red49 (19.2%)
Green80 (31.4%)
Blue157 (61.6%)
Hue222.78°
Saturation (HSL)52.43%
Lightness40.39%
Dominant channelBlue
Hex per channelR 31 · G 50 · B 9D

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 “31509d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.