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Recognised as Colour

#151BA5

  • #151BA5
  • Blue
  • Dark
  • Nearest: Dark blue

#151BA5 is a blue with RGB values 21, 27, 165 and HSL 238°, 77%, 36%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#151BA5#151BA5
HEX#151BA5
RGBrgb(21, 27, 165)
RGB (0–1)0.0824, 0.1059, 0.6471
RGB percentages8.2%, 10.6%, 64.7%
HSLhsl(237.5, 77.4%, 36.5%)
HSV / HSBhsv(237.5, 87.3%, 64.7%)
CMYK87.3%, 83.6%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,383,333
CSS custom property--colour: #151BA5;

Brightness & contrast

Relative luminance0.0366WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.12:1
Contrast with white12.12:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#EAE45A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003DA9no red cones; affects about 1% of men; ΔE 23.3 from the original
Deuteranopia#002EA3no green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#004862no blue cones; rare, and affects men and women equally; ΔE 77.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.12:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark blue · ΔE 8.6Navy · ΔE 11.9Indigo · ΔE 18.9Rebecca purple · ΔE 27.3Medium blue · ΔE 27.4Midnight blue · ΔE 28.5
Nearest named CSS colourDark blue (#00008B)ΔE 8.6, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A59F15
Analogous#1563A5, #5715A5
Triadic#A5151B, #1BA515
Split complementary#A55715, #63A515
Tetradic#A51563, #A59F15, #15A557

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9598F1
Lighter +30%#676DEC
Lighter +20%#3A41E6
Lighter +10%#1B22D2
Darker −10%#0F1478
Darker −20%#090C4B
Darker −30%#04051D
Darker −40%#000000
More saturated +25%#0008BA
Less saturated −25%#2C308E

Channel breakdown

R21
G27
B165
Red21 (8.2%)
Green27 (10.6%)
Blue165 (64.7%)
Hue237.5°
Saturation (HSL)77.42%
Lightness36.47%
Dominant channelBlue
Hex per channelR 15 · G 1B · B A5

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Every value on this page was computed from “151ba5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.