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Recognised as Colour

#182A61

  • #182A61
  • Blue
  • Dark
  • Nearest: Dark slateblue

#182A61 is a blue with RGB values 24, 42, 97 and HSL 225°, 60%, 24%. It is a dark colour, so white text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#182A61#182A61
HEX#182A61
RGBrgb(24, 42, 97)
RGB (0–1)0.0941, 0.1647, 0.3804
RGB percentages9.4%, 16.5%, 38%
HSLhsl(225.2, 60.3%, 23.7%)
HSV / HSBhsv(225.2, 75.3%, 38%)
CMYK75.3%, 56.7%, 0%, 62%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,583,713
CSS custom property--colour: #182A61;

Brightness & contrast

Relative luminance0.02713WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.61:1
Contrast with white13.61:1WCAG normal text: AAA
Contrast with black1.54:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#E7D59E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#043163no red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#002B60no green cones; the most common form, about 1% of men; ΔE 4 from the original
Tritanopia#003741no blue cones; rare, and affects men and women equally; ΔE 35.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.61:1WCAG large text: AAA
Contrast with black, large text1.54:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.5Midnight blue · ΔE 23.3Rebecca purple · ΔE 34.5Steel blue · ΔE 38.2Slate blue · ΔE 41.4Black · ΔE 42
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#614F18
Analogous#184F61, #2A1861
Triadic#61182A, #2A6118
Split complementary#612A18, #4F6118
Tetradic#61184F, #614F18, #18612A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6B86DA
Lighter +30%#4265D0
Lighter +20%#2C4DB3
Lighter +10%#223C8A
Darker −10%#0E1838
Darker −20%#04070F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#092270
Less saturated −25%#273252

Channel breakdown

R24
G42
B97
Red24 (9.4%)
Green42 (16.5%)
Blue97 (38%)
Hue225.21°
Saturation (HSL)60.33%
Lightness23.73%
Dominant channelBlue
Hex per channelR 18 · G 2A · B 61

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Every value on this page was computed from “182a61” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.