Colour

#001BBF

#001BBF
Blue
Dark
Nearest: Medium blue

#001BBF is a blue with RGB values 0, 27, 191 and HSL 232°, 100%, 37%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#001BBF#001BBF

HEX#001BBF

RGBrgb(0, 27, 191)

RGB (0–1)0, 0.1059, 0.749

RGB percentages0%, 10.6%, 74.9%

HSLhsl(231.5, 100%, 37.5%)

HSV / HSBhsv(231.5, 100%, 74.9%)

CMYK100%, 85.9%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,103

CSS custom property--colour: #001BBF;

Brightness & contrast

Relative luminance0.04545WCAG 2.x, 0 is black and 1 is white

Perceived brightness67.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11:1

Contrast with white11:1WCAG normal text: AAA

Contrast with black1.91:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#FFE440

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0045C3no red cones; affects about 1% of men; ΔE 27.3 from the original

Deuteranopia#0032BCno green cones; the most common form, about 1% of men; ΔE 15.8 from the original

Tritanopia#005371no blue cones; rare, and affects men and women equally; ΔE 88.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text11:1WCAG large text: AAA

Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Medium blue · ΔE 14.3 Dark blue · ΔE 18.3 Blue violet · ΔE 23.1 Navy · ΔE 23.3 Dark violet · ΔE 27.6 Indigo · ΔE 30

Nearest named CSS colourMedium blue (#0000CD)ΔE 14.34, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BFA400

Analogous#007BBF, #4400BF

Triadic#BF001B, #1BBF00

Split complementary#BF4400, #7BBF00

Tetradic#BF007B, #BFA400, #00BF44

Tints, shades & saturation

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

Lighter +40%#8C9CFF

Lighter +30%#5970FF

Lighter +20%#2645FF

Lighter +10%#0022F2

Darker −10%#00148C

Darker −20%#000D59

Darker −30%#000526

Darker −40%#000000

More saturated +25%#001BBF

Less saturated −25%#182CA7

Channel breakdown

G27

B191

Red0 (0%)

Green27 (10.6%)

Blue191 (74.9%)

Hue231.52°

Saturation (HSL)100%

Lightness37.45%

Dominant channelBlue

Hex per channelR 00 · G 1B · B BF

Keep nerding

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

#001BBF

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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