Nerdulator> put something in

Recognised as Colour

#2D397F

  • #2D397F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2D397F is a blue with RGB values 45, 57, 127 and HSL 231°, 48%, 34%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2D397F#2D397F
HEX#2D397F
RGBrgb(45, 57, 127)
RGB (0–1)0.1765, 0.2235, 0.498
RGB percentages17.6%, 22.4%, 49.8%
HSLhsl(231.2, 47.7%, 33.7%)
HSV / HSBhsv(231.2, 64.6%, 49.8%)
CMYK64.6%, 55.1%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,963,839
CSS custom property--colour: #2D397F;

Brightness & contrast

Relative luminance0.05016WCAG 2.x, 0 is black and 1 is white
Perceived brightness66 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.48:1
Contrast with white10.48:1WCAG normal text: AAA
Contrast with black2:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#D2C680

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0C4381no red cones; affects about 1% of men; ΔE 10.8 from the original
Deuteranopia#003C7Eno green cones; the most common form, about 1% of men; ΔE 7.8 from the original
Tritanopia#004956no blue cones; rare, and affects men and women equally; ΔE 43.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.48:1WCAG large text: AAA
Contrast with black, large text2:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 8.4Midnight blue · ΔE 18.9Rebecca purple · ΔE 25.6Slate blue · ΔE 30.3Royal blue · ΔE 32.8Medium purple · ΔE 34.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 8.39, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F732D
Analogous#2D627F, #4A2D7F
Triadic#7F2D39, #397F2D
Split complementary#7F4A2D, #627F2D
Tetradic#7F2D62, #7F732D, #2D7F4A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CA5DC
Lighter +30%#7683CF
Lighter +20%#5161C1
Lighter +10%#3A4AA5
Darker −10%#202859
Darker −20%#121734
Darker −30%#05060E
Darker −40%#000000
More saturated +25%#182A94
Less saturated −25%#43486A

Channel breakdown

R45
G57
B127
Red45 (17.6%)
Green57 (22.4%)
Blue127 (49.8%)
Hue231.22°
Saturation (HSL)47.67%
Lightness33.73%
Dominant channelBlue
Hex per channelR 2D · G 39 · B 7F

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 “2d397f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.