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Recognised as Colour

#312C75

  • #312C75
  • Blue
  • Dark
  • Nearest: Dark slateblue

#312C75 is a blue with RGB values 49, 44, 117 and HSL 244°, 45%, 32%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#312C75#312C75
HEX#312C75
RGBrgb(49, 44, 117)
RGB (0–1)0.1922, 0.1725, 0.4588
RGB percentages19.2%, 17.3%, 45.9%
HSLhsl(244.1, 45.3%, 31.6%)
HSV / HSBhsv(244.1, 62.4%, 45.9%)
CMYK58.1%, 62.4%, 0%, 54.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,222,645
CSS custom property--colour: #312C75;

Brightness & contrast

Relative luminance0.03739WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.02:1
Contrast with white12.02:1WCAG normal text: AAA
Contrast with black1.75:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#CED38A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003977no red cones; affects about 1% of men; ΔE 14.8 from the original
Deuteranopia#003474no green cones; the most common form, about 1% of men; ΔE 12.4 from the original
Tritanopia#0F3D4Cno blue cones; rare, and affects men and women equally; ΔE 44.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.02:1WCAG large text: AAA
Contrast with black, large text1.75:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 8.2Midnight blue · ΔE 12.8Rebecca purple · ΔE 21.5Indigo · ΔE 29.5Slate blue · ΔE 30.1Navy · ΔE 34
Nearest named CSS colourDark slateblue (#483D8B)ΔE 8.18, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#70752C
Analogous#2C4C75, #552C75
Triadic#75312C, #2C7531
Split complementary#75562C, #4B752C
Tetradic#752C4C, #70752C, #2C7555

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9A96D7
Lighter +30%#7771C9
Lighter +20%#534CBB
Lighter +10%#413A9A
Darker −10%#211E50
Darker −20%#12102B
Darker −30%#020206
Darker −40%#000000
More saturated +25%#201889
Less saturated −25%#424061

Channel breakdown

R49
G44
B117
Red49 (19.2%)
Green44 (17.3%)
Blue117 (45.9%)
Hue244.11°
Saturation (HSL)45.34%
Lightness31.57%
Dominant channelBlue
Hex per channelR 31 · G 2C · B 75

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Every value on this page was computed from “312c75” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.