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Recognised as Colour

#180B3E

  • #180B3E
  • Violet
  • Dark
  • Nearest: Midnight blue

#180B3E is a violet with RGB values 24, 11, 62 and HSL 255°, 70%, 14%. It is a dark colour, so white text on it reaches 18.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#180B3E#180B3E
HEX#180B3E
RGBrgb(24, 11, 62)
RGB (0–1)0.0941, 0.0431, 0.2431
RGB percentages9.4%, 4.3%, 24.3%
HSLhsl(255.3, 69.9%, 14.3%)
HSV / HSBhsv(255.3, 82.3%, 24.3%)
CMYK61.3%, 82.3%, 0%, 75.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,575,742
CSS custom property--colour: #180B3E;

Brightness & contrast

Relative luminance0.00781WCAG 2.x, 0 is black and 1 is white
Perceived brightness26.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.16:1
Contrast with white18.16:1WCAG normal text: AAA
Contrast with black1.16:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#E7F4C1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00173Fno red cones; affects about 1% of men; ΔE 12.6 from the original
Deuteranopia#00143Dno green cones; the most common form, about 1% of men; ΔE 11 from the original
Tritanopia#091923no blue cones; rare, and affects men and women equally; ΔE 32.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.16:1WCAG large text: AAA
Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 23.4Dark slateblue · ΔE 26.9Rebecca purple · ΔE 37.3Black · ΔE 38Indigo · ΔE 39.9Navy · ΔE 43.3
Nearest named CSS colourMidnight blue (#191970)ΔE 23.42, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#313E0B
Analogous#0B183E, #310B3E
Triadic#3E180B, #0B3E18
Split complementary#3E310B, #183E0B
Tetradic#3E0B18, #313E0B, #0B3E31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6339DC
Lighter +30%#4A22C0
Lighter +20%#3A1A95
Lighter +10%#291369
Darker −10%#070313
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#140247
Less saturated −25%#1C1435

Channel breakdown

R24
G11
B62
Red24 (9.4%)
Green11 (4.3%)
Blue62 (24.3%)
Hue255.29°
Saturation (HSL)69.86%
Lightness14.31%
Dominant channelBlue
Hex per channelR 18 · G 0B · B 3E

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Every value on this page was computed from “180b3e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.