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Recognised as Colour

#043FF8

  • #043FF8
  • Blue
  • Dark
  • Nearest: Medium blue

#043FF8 is a blue with RGB values 4, 63, 248 and HSL 225°, 97%, 49%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#043FF8#043FF8
HEX#043FF8
RGBrgb(4, 63, 248)
RGB (0–1)0.0157, 0.2471, 0.9725
RGB percentages1.6%, 24.7%, 97.3%
HSLhsl(225.5, 96.8%, 49.4%)
HSV / HSBhsv(225.5, 98.4%, 97.3%)
CMYK98.4%, 74.6%, 0%, 2.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer278,520
CSS custom property--colour: #043FF8;

Brightness & contrast

Relative luminance0.10358WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.84:1
Contrast with white6.84:1WCAG normal text: AA
Contrast with black3.07:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#FBC007

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0066FDno red cones; affects about 1% of men; ΔE 26.9 from the original
Deuteranopia#004FF5no green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#007799no blue cones; rare, and affects men and women equally; ΔE 98.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.84:1WCAG large text: AAA
Contrast with black, large text3.07:1WCAG large text: AA

Named colours

Medium blue · ΔE 17.4Blue violet · ΔE 23.5Blue · ΔE 27.6Dark violet · ΔE 30.7Medium slateblue · ΔE 34.9Dark blue · ΔE 34.9
Nearest named CSS colourMedium blue (#0000CD)ΔE 17.44, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F8BD04
Analogous#04B9F8, #4304F8
Triadic#F8043F, #3FF804
Split complementary#F84304, #B9F804
Tetradic#F804B9, #F8BD04, #04F843

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CAD6FE
Lighter +30%#98B0FD
Lighter +20%#658AFD
Lighter +10%#3364FC
Darker −10%#0332C6
Darker −20%#022694
Darker −30%#021961
Darker −40%#010C2F
More saturated +25%#003DFC
Less saturated −25%#244FD8

Channel breakdown

R4
G63
B248
Red4 (1.6%)
Green63 (24.7%)
Blue248 (97.3%)
Hue225.49°
Saturation (HSL)96.83%
Lightness49.41%
Dominant channelBlue
Hex per channelR 04 · G 3F · B F8

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Every value on this page was computed from “043ff8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.