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Recognised as Colour

#4591B7

  • #4591B7
  • Blue
  • Dark
  • Nearest: Steel blue

#4591B7 is a blue with RGB values 69, 145, 183 and HSL 200°, 45%, 49%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4591B7#4591B7
HEX#4591B7
RGBrgb(69, 145, 183)
RGB (0–1)0.2706, 0.5686, 0.7176
RGB percentages27.1%, 56.9%, 71.8%
HSLhsl(200, 45.2%, 49.4%)
HSV / HSBhsv(200, 62.3%, 71.8%)
CMYK62.3%, 20.8%, 0%, 28.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,559,287
CSS custom property--colour: #4591B7;

Brightness & contrast

Relative luminance0.24935WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.99:1
Contrast with white3.51:1WCAG normal text: Fail
Contrast with black5.99:1WCAG normal text: AA
Greyscale equivalent#848484
Inverted#BA6E48

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7E8FB9no red cones; affects about 1% of men; ΔE 16.2 from the original
Deuteranopia#6F84B6no green cones; the most common form, about 1% of men; ΔE 17.2 from the original
Tritanopia#009B9Eno blue cones; rare, and affects men and women equally; ΔE 25.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.51:1WCAG large text: AA
Contrast with black, large text5.99:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.5Light slate grey · ΔE 18.5Slate grey · ΔE 19.4Cadetblue · ΔE 21.4Light skyblue · ΔE 22.8Deep skyblue · ΔE 22.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B76B45
Analogous#45B7A4, #4558B7
Triadic#B74591, #91B745
Split complementary#B74558, #B7A445
Tetradic#A445B7, #B76B45, #58B745

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8E8F0
Lighter +30%#B3D2E2
Lighter +20%#8EBDD4
Lighter +10%#69A7C6
Darker −10%#377492
Darker −20%#29566D
Darker −30%#1B3948
Darker −40%#0D1C23
More saturated +25%#259BD7
Less saturated −25%#658798

Channel breakdown

R69
G145
B183
Red69 (27.1%)
Green145 (56.9%)
Blue183 (71.8%)
Hue200°
Saturation (HSL)45.24%
Lightness49.41%
Dominant channelBlue
Hex per channelR 45 · G 91 · B B7

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Every value on this page was computed from “4591b7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.