Nerdulator> put something in

Colour

#181E2B

  • #181E2B
  • Blue
  • Dark
  • Nearest: Black

#181E2B is a blue with RGB values 24, 30, 43 and HSL 221°, 28%, 13%. It is a dark colour, so white text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181E2B#181E2B
HEX#181E2B
RGBrgb(24, 30, 43)
RGB (0–1)0.0941, 0.1176, 0.1686
RGB percentages9.4%, 11.8%, 16.9%
HSLhsl(221.1, 28.4%, 13.1%)
HSV / HSBhsv(221.1, 44.2%, 16.9%)
CMYK44.2%, 30.2%, 0%, 83.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,580,587
CSS custom property--colour: #181E2B;

Brightness & contrast

Relative luminance0.01297WCAG 2.x, 0 is black and 1 is white
Perceived brightness30.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.67:1
Contrast with white16.67:1WCAG normal text: AAA
Contrast with black1.26:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#E7E1D4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1A1F2Cno red cones; affects about 1% of men; ΔE 0.7 from the original
Deuteranopia#181D2Bno green cones; the most common form, about 1% of men; ΔE 1 from the original
Tritanopia#122122no blue cones; rare, and affects men and women equally; ΔE 10.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.67:1WCAG large text: AAA
Contrast with black, large text1.26:1WCAG large text: Fail

Named colours

Black · ΔE 14.9Dark slate grey · ΔE 24.6Dim grey · ΔE 34.6Slate grey · ΔE 41.7Gray · ΔE 43.4Light slate grey · ΔE 44.8
Nearest named CSS colourBlack (#000000)ΔE 14.86, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2B2518
Analogous#18272B, #1C182B
Triadic#2B181E, #1E2B18
Split complementary#2B1C18, #272B18
Tetradic#2B1827, #2B2518, #182B1C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#667BA9
Lighter +30%#4F638D
Lighter +20%#3D4C6C
Lighter +10%#2A354C
Darker −10%#06070A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#101B33
Less saturated −25%#202123

Channel breakdown

R24
G30
B43
Red24 (9.4%)
Green30 (11.8%)
Blue43 (16.9%)
Hue221.05°
Saturation (HSL)28.36%
Lightness13.14%
Dominant channelBlue
Hex per channelR 18 · G 1E · B 2B

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “181e2b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.