Recognised as Colour

#151B3A

#151B3A
Blue
Dark
Nearest: Black

#151B3A is a blue with RGB values 21, 27, 58 and HSL 230°, 47%, 15%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#151B3A#151B3A

HEX#151B3A

RGBrgb(21, 27, 58)

RGB (0–1)0.0824, 0.1059, 0.2275

RGB percentages8.2%, 10.6%, 22.7%

HSLhsl(230.3, 46.8%, 15.5%)

HSV / HSBhsv(230.3, 63.8%, 22.7%)

CMYK63.8%, 53.4%, 0%, 77.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,383,226

CSS custom property--colour: #151B3A;

Brightness & contrast

Relative luminance0.01249WCAG 2.x, 0 is black and 1 is white

Perceived brightness30.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.8:1

Contrast with white16.8:1WCAG normal text: AAA

Contrast with black1.25:1WCAG normal text: Fail

Greyscale equivalent#1C1C1C

Inverted#EAE4C5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0D1F3Bno red cones; affects about 1% of men; ΔE 4.7 from the original

Deuteranopia#081C39no green cones; the most common form, about 1% of men; ΔE 4.1 from the original

Tritanopia#032227no blue cones; rare, and affects men and women equally; ΔE 22.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.8:1WCAG large text: AAA

Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 25.1 Dark slate grey · ΔE 33.4 Dark slateblue · ΔE 33.9 Midnight blue · ΔE 37.2 Dim grey · ΔE 40.4 Slate grey · ΔE 44.5

Nearest named CSS colourBlack (#000000)ΔE 25.12, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#3A3415

Analogous#152E3A, #21153A

Triadic#3A151B, #1B3A15

Split complementary#3A2115, #2E3A15

Tetradic#3A152E, #3A3415, #153A21

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#586AC3

Lighter +30%#3E4FAA

Lighter +20%#303E85

Lighter +10%#232C5F

Darker −10%#070A15

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0B1444

Less saturated −25%#1F2230

Channel breakdown

R21

G27

B58

Red21 (8.2%)

Green27 (10.6%)

Blue58 (22.7%)

Hue230.27°

Saturation (HSL)46.84%

Lightness15.49%

Dominant channelBlue

Hex per channelR 15 · G 1B · B 3A

Keep nerding

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

#151B3A

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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