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Colour

#231C67

  • #231C67
  • Blue
  • Dark
  • Nearest: Midnight blue

#231C67 is a blue with RGB values 35, 28, 103 and HSL 246°, 57%, 26%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#231C67#231C67
HEX#231C67
RGBrgb(35, 28, 103)
RGB (0–1)0.1373, 0.1098, 0.4039
RGB percentages13.7%, 11%, 40.4%
HSLhsl(245.6, 57.3%, 25.7%)
HSV / HSBhsv(245.6, 72.8%, 40.4%)
CMYK66%, 72.8%, 0%, 59.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,301,031
CSS custom property--colour: #231C67;

Brightness & contrast

Relative luminance0.02167WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.65:1
Contrast with white14.65:1WCAG normal text: AAA
Contrast with black1.43:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#DCE398

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002B69no red cones; affects about 1% of men; ΔE 14.3 from the original
Deuteranopia#002666no green cones; the most common form, about 1% of men; ΔE 11.6 from the original
Tritanopia#00303Fno blue cones; rare, and affects men and women equally; ΔE 46.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.65:1WCAG large text: AAA
Contrast with black, large text1.43:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 7.8Dark slateblue · ΔE 14.6Rebecca purple · ΔE 22.8Indigo · ΔE 26.4Navy · ΔE 29.6Slate blue · ΔE 33.6
Nearest named CSS colourMidnight blue (#191970)ΔE 7.76, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#60671C
Analogous#1C3A67, #491C67
Triadic#67231C, #1C6723
Split complementary#67491C, #3A671C
Tetradic#671C3A, #60671C, #1C6749

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7F75DA
Lighter +30%#594DCF
Lighter +20%#3E32B7
Lighter +10%#31278F
Darker −10%#15113F
Darker −20%#080617
Darker −30%#000000
Darker −40%#000000
More saturated +25%#160C77
Less saturated −25%#302C57

Channel breakdown

R35
G28
B103
Red35 (13.7%)
Green28 (11%)
Blue103 (40.4%)
Hue245.6°
Saturation (HSL)57.25%
Lightness25.69%
Dominant channelBlue
Hex per channelR 23 · G 1C · B 67

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Every value on this page was computed from “231c67” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.