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Colour

#040030

  • #040030
  • Blue
  • Dark
  • Nearest: Midnight blue

#040030 is a blue with RGB values 4, 0, 48 and HSL 245°, 100%, 9%. It is a dark colour, so white text on it reaches 20:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#040030#040030
HEX#040030
RGBrgb(4, 0, 48)
RGB (0–1)0.0157, 0, 0.1882
RGB percentages1.6%, 0%, 18.8%
HSLhsl(245, 100%, 9.4%)
HSV / HSBhsv(245, 100%, 18.8%)
CMYK91.7%, 100%, 0%, 81.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,192
CSS custom property--colour: #040030;

Brightness & contrast

Relative luminance0.00239WCAG 2.x, 0 is black and 1 is white
Perceived brightness16.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.04:1
Contrast with white20.04:1WCAG normal text: AAA
Contrast with black1.05:1WCAG normal text: Fail
Greyscale equivalent#040404
Inverted#FBFFCF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000A31no red cones; affects about 1% of men; ΔE 5.3 from the original
Deuteranopia#00062Fno green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#000E18no blue cones; rare, and affects men and women equally; ΔE 26.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.04:1WCAG large text: AAA
Contrast with black, large text1.05:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 30.9Black · ΔE 31.5Dark slateblue · ΔE 34Dark slate grey · ΔE 46Rebecca purple · ΔE 46Indigo · ΔE 48.6
Nearest named CSS colourMidnight blue (#191970)ΔE 30.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2C3000
Analogous#001430, #1C0030
Triadic#300400, #003004
Split complementary#301C00, #143000
Tetradic#300014, #2C3000, #00301C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1500FC
Lighter +30%#1100C9
Lighter +20%#0C0096
Lighter +10%#080063
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#040030
Less saturated −25%#09062A

Channel breakdown

R4
G0
B48
Red4 (1.6%)
Green0 (0%)
Blue48 (18.8%)
Hue245°
Saturation (HSL)100%
Lightness9.41%
Dominant channelBlue
Hex per channelR 04 · G 00 · B 30

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Every value on this page was computed from “hex 040030” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.