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Recognised as Colour

#041021

  • #041021
  • Blue
  • Dark
  • Nearest: Black

#041021 is a blue with RGB values 4, 16, 33 and HSL 215°, 78%, 7%. It is a dark colour, so white text on it reaches 19.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#041021#041021
HEX#041021
RGBrgb(4, 16, 33)
RGB (0–1)0.0157, 0.0627, 0.1294
RGB percentages1.6%, 6.3%, 12.9%
HSLhsl(215.2, 78.4%, 7.3%)
HSV / HSBhsv(215.2, 87.9%, 12.9%)
CMYK87.9%, 51.5%, 0%, 87.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer266,273
CSS custom property--colour: #041021;

Brightness & contrast

Relative luminance0.00506WCAG 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 19.07:1
Contrast with white19.07:1WCAG normal text: AAA
Contrast with black1.1:1WCAG normal text: Fail
Greyscale equivalent#0F0F0F
Inverted#FBEFDE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#081122no red cones; affects about 1% of men; ΔE 1 from the original
Deuteranopia#050E21no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#001416no blue cones; rare, and affects men and women equally; ΔE 11.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.07:1WCAG large text: AAA
Contrast with black, large text1.1:1WCAG large text: Fail

Named colours

Black · ΔE 13.4Dark slate grey · ΔE 30.9Dim grey · ΔE 41.8Dark slateblue · ΔE 46.7Slate grey · ΔE 48.4Midnight blue · ΔE 49.3
Nearest named CSS colourBlack (#000000)ΔE 13.43, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#211504
Analogous#041E21, #070421
Triadic#210410, #102104
Split complementary#210704, #1E2104
Tetradic#21041E, #211504, #042107

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1A68D7
Lighter +30%#1552A9
Lighter +20%#0F3C7C
Lighter +10%#0A264E
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000F25
Less saturated −25%#09111C

Channel breakdown

R4
G16
B33
Red4 (1.6%)
Green16 (6.3%)
Blue33 (12.9%)
Hue215.17°
Saturation (HSL)78.38%
Lightness7.25%
Dominant channelBlue
Hex per channelR 04 · G 10 · B 21

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Every value on this page was computed from “hex 041021” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.