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Recognised as Colour

#151FBC

  • #151FBC
  • Blue
  • Dark
  • Nearest: Dark blue

#151FBC is a blue with RGB values 21, 31, 188 and HSL 236°, 80%, 41%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#151FBC#151FBC
HEX#151FBC
RGBrgb(21, 31, 188)
RGB (0–1)0.0824, 0.1216, 0.7373
RGB percentages8.2%, 12.2%, 73.7%
HSLhsl(236.4, 79.9%, 41%)
HSV / HSBhsv(236.4, 88.8%, 73.7%)
CMYK88.8%, 83.5%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,384,380
CSS custom property--colour: #151FBC;

Brightness & contrast

Relative luminance0.0477WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.75:1
Contrast with white10.75:1WCAG normal text: AAA
Contrast with black1.95:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#EAE043

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0046C0no red cones; affects about 1% of men; ΔE 26.2 from the original
Deuteranopia#0035B9no green cones; the most common form, about 1% of men; ΔE 16 from the original
Tritanopia#005370no blue cones; rare, and affects men and women equally; ΔE 85.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.75:1WCAG large text: AAA
Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Dark blue · ΔE 16.1Medium blue · ΔE 18Navy · ΔE 20.8Blue violet · ΔE 23.3Indigo · ΔE 27Dark violet · ΔE 27.9
Nearest named CSS colourDark blue (#00008B)ΔE 16.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BCB215
Analogous#1572BC, #5F15BC
Triadic#BC151F, #1FBC15
Split complementary#BC5F15, #72BC15
Tetradic#BC1572, #BCB215, #15BC5F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8ACF5
Lighter +30%#7A81F0
Lighter +20%#4C56EB
Lighter +10%#1E2AE6
Darker −10%#10178E
Darker −20%#0B1060
Darker −30%#060832
Darker −40%#010104
More saturated +25%#000DD1
Less saturated −25%#2F36A2

Channel breakdown

R21
G31
B188
Red21 (8.2%)
Green31 (12.2%)
Blue188 (73.7%)
Hue236.41°
Saturation (HSL)79.9%
Lightness40.98%
Dominant channelBlue
Hex per channelR 15 · G 1F · B BC

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Every value on this page was computed from “151fbc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.