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Recognised as Colour

#31407D

  • #31407D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#31407D is a blue with RGB values 49, 64, 125 and HSL 228°, 44%, 34%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#31407D#31407D
HEX#31407D
RGBrgb(49, 64, 125)
RGB (0–1)0.1922, 0.251, 0.4902
RGB percentages19.2%, 25.1%, 49%
HSLhsl(228.2, 43.7%, 34.1%)
HSV / HSBhsv(228.2, 60.8%, 49%)
CMYK60.8%, 48.8%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,227,773
CSS custom property--colour: #31407D;

Brightness & contrast

Relative luminance0.058WCAG 2.x, 0 is black and 1 is white
Perceived brightness70 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.72:1
Contrast with white9.72:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#CEBF82

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#23487Fno red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#17417Cno green cones; the most common form, about 1% of men; ΔE 5.7 from the original
Tritanopia#004E58no blue cones; rare, and affects men and women equally; ΔE 39.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.72:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.4Midnight blue · ΔE 25.5Steel blue · ΔE 30Rebecca purple · ΔE 31Slate blue · ΔE 34.7Cornflower blue · ΔE 35.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D6E31
Analogous#31667D, #48317D
Triadic#7D3140, #407D31
Split complementary#7D4831, #667D31
Tetradic#7D3166, #7D6E31, #317D48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A0ACDA
Lighter +30%#7C8BCB
Lighter +20%#576BBD
Lighter +10%#3F53A2
Darker −10%#232D58
Darker −20%#141A34
Darker −30%#06080F
Darker −40%#000000
More saturated +25%#1B3393
Less saturated −25%#474D67

Channel breakdown

R49
G64
B125
Red49 (19.2%)
Green64 (25.1%)
Blue125 (49%)
Hue228.16°
Saturation (HSL)43.68%
Lightness34.12%
Dominant channelBlue
Hex per channelR 31 · G 40 · B 7D

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Every value on this page was computed from “31407d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.