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Recognised as Colour

#040131

  • #040131
  • Blue
  • Dark
  • Nearest: Midnight blue

#040131 is a blue with RGB values 4, 1, 49 and HSL 244°, 96%, 10%. It is a dark colour, so white text on it reaches 19.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#040131#040131
HEX#040131
RGBrgb(4, 1, 49)
RGB (0–1)0.0157, 0.0039, 0.1922
RGB percentages1.6%, 0.4%, 19.2%
HSLhsl(243.8, 96%, 9.8%)
HSV / HSBhsv(243.8, 98%, 19.2%)
CMYK91.8%, 98%, 0%, 80.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,449
CSS custom property--colour: #040131;

Brightness & contrast

Relative luminance0.00269WCAG 2.x, 0 is black and 1 is white
Perceived brightness16.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.93:1
Contrast with white19.93:1WCAG normal text: AAA
Contrast with black1.05:1WCAG normal text: Fail
Greyscale equivalent#050505
Inverted#FBFECE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000B32no red cones; affects about 1% of men; ΔE 5.3 from the original
Deuteranopia#000730no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#000F19no blue cones; rare, and affects men and women equally; ΔE 26.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.93:1WCAG large text: AAA
Contrast with black, large text1.05:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 30.5Black · ΔE 31.8Dark slateblue · ΔE 33.6Rebecca purple · ΔE 45.7Dark slate grey · ΔE 46.1Indigo · ΔE 48.2
Nearest named CSS colourMidnight blue (#191970)ΔE 30.49, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2E3101
Analogous#011631, #1C0131
Triadic#310401, #013104
Split complementary#311C01, #163101
Tetradic#310116, #2E3101, #01311C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1405F9
Lighter +30%#1004C7
Lighter +20%#0C0395
Lighter +10%#080263
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#030032
Less saturated −25%#09072B

Channel breakdown

R4
G1
B49
Red4 (1.6%)
Green1 (0.4%)
Blue49 (19.2%)
Hue243.75°
Saturation (HSL)96%
Lightness9.8%
Dominant channelBlue
Hex per channelR 04 · G 01 · B 31

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Every value on this page was computed from “hex 040131” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.