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Recognised as Colour

#4337A1

  • #4337A1
  • Blue
  • Dark
  • Nearest: Rebecca purple

#4337A1 is a blue with RGB values 67, 55, 161 and HSL 247°, 49%, 42%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#4337A1#4337A1
HEX#4337A1
RGBrgb(67, 55, 161)
RGB (0–1)0.2627, 0.2157, 0.6314
RGB percentages26.3%, 21.6%, 63.1%
HSLhsl(246.8, 49.1%, 42.4%)
HSV / HSBhsv(246.8, 65.8%, 63.1%)
CMYK58.4%, 65.8%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,405,153
CSS custom property--colour: #4337A1;

Brightness & contrast

Relative luminance0.06499WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.13:1
Contrast with white9.13:1WCAG normal text: AAA
Contrast with black2.3:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#BCC85E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004CA4no red cones; affects about 1% of men; ΔE 20.2 from the original
Deuteranopia#00449Fno green cones; the most common form, about 1% of men; ΔE 16.4 from the original
Tritanopia#0C5267no blue cones; rare, and affects men and women equally; ΔE 61.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.13:1WCAG large text: AAA
Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 11.4Slate blue · ΔE 14.8Midnight blue · ΔE 16.6Dark slateblue · ΔE 16.9Indigo · ΔE 18.9Royal blue · ΔE 21.8
Nearest named CSS colourRebecca purple (#663399)ΔE 11.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#95A137
Analogous#3760A1, #7837A1
Triadic#A14337, #37A143
Split complementary#A17837, #60A137
Tetradic#A13760, #95A137, #37A178

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1BCE8
Lighter +30%#9E96DB
Lighter +20%#7B70CE
Lighter +10%#574AC1
Darker −10%#332A7B
Darker −20%#231D55
Darker −30%#14102F
Darker −40%#040309
More saturated +25%#2E1CBC
Less saturated −25%#585286

Channel breakdown

R67
G55
B161
Red67 (26.3%)
Green55 (21.6%)
Blue161 (63.1%)
Hue246.79°
Saturation (HSL)49.07%
Lightness42.35%
Dominant channelBlue
Hex per channelR 43 · G 37 · B A1

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Every value on this page was computed from “4337a1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.