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Recognised as Colour

#000421

  • #000421
  • Blue
  • Dark
  • Nearest: Black

#000421 is a blue with RGB values 0, 4, 33 and HSL 233°, 100%, 6%. It is a dark colour, so white text on it reaches 20.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#000421#000421
HEX#000421
RGBrgb(0, 4, 33)
RGB (0–1)0, 0.0157, 0.1294
RGB percentages0%, 1.6%, 12.9%
HSLhsl(232.7, 100%, 6.5%)
HSV / HSBhsv(232.7, 100%, 12.9%)
CMYK100%, 87.9%, 0%, 87.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,057
CSS custom property--colour: #000421;

Brightness & contrast

Relative luminance0.00197WCAG 2.x, 0 is black and 1 is white
Perceived brightness11.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.21:1
Contrast with white20.21:1WCAG normal text: AAA
Contrast with black1.04:1WCAG normal text: Fail
Greyscale equivalent#050505
Inverted#FFFBDE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000822no red cones; affects about 1% of men; ΔE 1.6 from the original
Deuteranopia#000520no green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#000B11no blue cones; rare, and affects men and women equally; ΔE 14.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.21:1WCAG large text: AAA
Contrast with black, large text1.04:1WCAG large text: Fail

Named colours

Black · ΔE 17.8Dark slate grey · ΔE 36.5Dark slateblue · ΔE 43.7Midnight blue · ΔE 44.3Dim grey · ΔE 46.2Slate grey · ΔE 52
Nearest named CSS colourBlack (#000000)ΔE 17.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#211D00
Analogous#001421, #0D0021
Triadic#210004, #042100
Split complementary#210D00, #142100
Tetradic#210014, #211D00, #00210D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#001DED
Lighter +30%#0017BA
Lighter +20%#001087
Lighter +10%#000A54
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000421
Less saturated −25%#04071D

Channel breakdown

R0
G4
B33
Red0 (0%)
Green4 (1.6%)
Blue33 (12.9%)
Hue232.73°
Saturation (HSL)100%
Lightness6.47%
Dominant channelBlue
Hex per channelR 00 · G 04 · B 21

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Every value on this page was computed from “hex 000421” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.