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Recognised as Colour

#182B48

  • #182B48
  • Blue
  • Dark
  • Nearest: Dark slate grey

#182B48 is a blue with RGB values 24, 43, 72 and HSL 216°, 50%, 19%. It is a dark colour, so white text on it reaches 14.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#182B48#182B48
HEX#182B48
RGBrgb(24, 43, 72)
RGB (0–1)0.0941, 0.1686, 0.2824
RGB percentages9.4%, 16.9%, 28.2%
HSLhsl(216.3, 50%, 18.8%)
HSV / HSBhsv(216.3, 66.7%, 28.2%)
CMYK66.7%, 40.3%, 0%, 71.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,583,944
CSS custom property--colour: #182B48;

Brightness & contrast

Relative luminance0.0239WCAG 2.x, 0 is black and 1 is white
Perceived brightness43 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.21:1
Contrast with white14.21:1WCAG normal text: AAA
Contrast with black1.48:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#E7D4B7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1F2D49no red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#182947no green cones; the most common form, about 1% of men; ΔE 1.4 from the original
Tritanopia#003236no blue cones; rare, and affects men and women equally; ΔE 21.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.21:1WCAG large text: AAA
Contrast with black, large text1.48:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 26.1Black · ΔE 27Dim grey · ΔE 34Dark slateblue · ΔE 34.5Slate grey · ΔE 37.1Steel blue · ΔE 37.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 26.14, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#483518
Analogous#184348, #1D1848
Triadic#48182B, #2B4818
Split complementary#481D18, #434818
Tetradic#481843, #483518, #18481D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#628BCB
Lighter +30%#3E70BB
Lighter +20%#325995
Lighter +10%#25426E
Darker −10%#0B1422
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C2954
Less saturated −25%#242E3C

Channel breakdown

R24
G43
B72
Red24 (9.4%)
Green43 (16.9%)
Blue72 (28.2%)
Hue216.25°
Saturation (HSL)50%
Lightness18.82%
Dominant channelBlue
Hex per channelR 18 · G 2B · B 48

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Every value on this page was computed from “182b48” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.