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Recognised as Colour

#043157

  • #043157
  • Blue
  • Dark
  • Nearest: Dark slate grey

#043157 is a blue with RGB values 4, 49, 87 and HSL 207°, 91%, 18%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#043157#043157
HEX#043157
RGBrgb(4, 49, 87)
RGB (0–1)0.0157, 0.1922, 0.3412
RGB percentages1.6%, 19.2%, 34.1%
HSLhsl(207.5, 91.2%, 17.8%)
HSV / HSBhsv(207.5, 95.4%, 34.1%)
CMYK95.4%, 43.7%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer274,775
CSS custom property--colour: #043157;

Brightness & contrast

Relative luminance0.02911WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.27:1
Contrast with white13.27:1WCAG normal text: AAA
Contrast with black1.58:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#FBCEA8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1E3459no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#102C56no green cones; the most common form, about 1% of men; ΔE 5.1 from the original
Tritanopia#003A3Fno blue cones; rare, and affects men and women equally; ΔE 25.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.27:1WCAG large text: AAA
Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 29.3Dark slateblue · ΔE 30.6Black · ΔE 33.4Steel blue · ΔE 33.7Dim grey · ΔE 36.6Slate grey · ΔE 37.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 29.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#572A04
Analogous#045754, #040857
Triadic#570431, #315704
Split complementary#570408, #575304
Tetradic#530457, #572A04, #085704

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#319CF6
Lighter +30%#0B83E9
Lighter +20%#0868B9
Lighter +10%#064C88
Darker −10%#021626
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00315B
Less saturated −25%#0F304C

Channel breakdown

R4
G49
B87
Red4 (1.6%)
Green49 (19.2%)
Blue87 (34.1%)
Hue207.47°
Saturation (HSL)91.21%
Lightness17.84%
Dominant channelBlue
Hex per channelR 04 · G 31 · B 57

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Every value on this page was computed from “hex 043157” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.