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Recognised as Colour

#04458A

  • #04458A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#04458A is a blue with RGB values 4, 69, 138 and HSL 211°, 94%, 28%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#04458A#04458A
HEX#04458A
RGBrgb(4, 69, 138)
RGB (0–1)0.0157, 0.2706, 0.5412
RGB percentages1.6%, 27.1%, 54.1%
HSLhsl(210.9, 94.4%, 27.8%)
HSV / HSBhsv(210.9, 97.1%, 54.1%)
CMYK97.1%, 50%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer279,946
CSS custom property--colour: #04458A;

Brightness & contrast

Relative luminance0.06117WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.44:1
Contrast with white9.44:1WCAG normal text: AAA
Contrast with black2.22:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#FBBA75

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1B4C8Dno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#004189no green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#005661no blue cones; rare, and affects men and women equally; ΔE 41.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.44:1WCAG large text: AAA
Contrast with black, large text2.22:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.9Midnight blue · ΔE 26.3Steel blue · ΔE 29.1Royal blue · ΔE 32.6Cornflower blue · ΔE 32.8Rebecca purple · ΔE 33
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A4904
Analogous#04888A, #06048A
Triadic#8A0445, #458A04
Split complementary#8A0604, #888A04
Tetradic#8A0488, #8A4904, #048A06

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#60ABFA
Lighter +30%#2E90F9
Lighter +20%#0777ED
Lighter +10%#055EBC
Darker −10%#032C58
Darker −20%#011327
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00458E
Less saturated −25%#164678

Channel breakdown

R4
G69
B138
Red4 (1.6%)
Green69 (27.1%)
Blue138 (54.1%)
Hue210.9°
Saturation (HSL)94.37%
Lightness27.84%
Dominant channelBlue
Hex per channelR 04 · G 45 · B 8A

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Every value on this page was computed from “04458a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.