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Colour

#043F6F

  • #043F6F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#043F6F is a blue with RGB values 4, 63, 111 and HSL 207°, 93%, 23%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#043F6F#043F6F
HEX#043F6F
RGBrgb(4, 63, 111)
RGB (0–1)0.0157, 0.2471, 0.4353
RGB percentages1.6%, 24.7%, 43.5%
HSLhsl(206.9, 93%, 22.5%)
HSV / HSBhsv(206.9, 96.4%, 43.5%)
CMYK96.4%, 43.2%, 0%, 56.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer278,383
CSS custom property--colour: #043F6F;

Brightness & contrast

Relative luminance0.04729WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.79:1
Contrast with white10.79:1WCAG normal text: AAA
Contrast with black1.95:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#FBC090

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#274271no red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#14396Eno green cones; the most common form, about 1% of men; ΔE 5.9 from the original
Tritanopia#004B51no blue cones; rare, and affects men and women equally; ΔE 30.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.79:1WCAG large text: AAA
Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.7Steel blue · ΔE 27.4Dark slate grey · ΔE 32.7Slate grey · ΔE 35.1Midnight blue · ΔE 35.1Light slate grey · ΔE 37.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6F3404
Analogous#046F69, #040A6F
Triadic#6F043F, #3F6F04
Split complementary#6F040A, #6F6A04
Tetradic#69046F, #6F3404, #096F04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#47A9F8
Lighter +30%#1592F7
Lighter +20%#0877D1
Lighter +10%#065BA0
Darker −10%#02233E
Darker −20%#00070D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003F73
Less saturated −25%#123E61

Channel breakdown

R4
G63
B111
Red4 (1.6%)
Green63 (24.7%)
Blue111 (43.5%)
Hue206.92°
Saturation (HSL)93.04%
Lightness22.55%
Dominant channelBlue
Hex per channelR 04 · G 3F · B 6F

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Every value on this page was computed from “043f6f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.