Colour

#001B65

#001B65
Blue
Dark
Nearest: Midnight blue

#001B65 is a blue with RGB values 0, 27, 101 and HSL 224°, 100%, 20%. It is a dark colour, so white text on it reaches 15.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001B65#001B65

HEX#001B65

RGBrgb(0, 27, 101)

RGB (0–1)0, 0.1059, 0.3961

RGB percentages0%, 10.6%, 39.6%

HSLhsl(224, 100%, 19.8%)

HSV / HSBhsv(224, 100%, 39.6%)

CMYK100%, 73.3%, 0%, 60.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,013

CSS custom property--colour: #001B65;

Brightness & contrast

Relative luminance0.01723WCAG 2.x, 0 is black and 1 is white

Perceived brightness39.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.62:1

Contrast with white15.62:1WCAG normal text: AAA

Contrast with black1.34:1WCAG normal text: Fail

Greyscale equivalent#1B1B1B

Inverted#FFE49A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#002867no red cones; affects about 1% of men; ΔE 10.9 from the original

Deuteranopia#001F64no green cones; the most common form, about 1% of men; ΔE 4.2 from the original

Tritanopia#00303Dno blue cones; rare, and affects men and women equally; ΔE 47.4 from the original

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

Contrast with white, large text15.62:1WCAG large text: AAA

Contrast with black, large text1.34:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.8 Dark slateblue · ΔE 17.3 Rebecca purple · ΔE 26.7 Indigo · ΔE 29.3 Navy · ΔE 30.2 Dark blue · ΔE 35

Nearest named CSS colourMidnight blue (#191970)ΔE 8.76, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#654A00

Analogous#004E65, #170065

Triadic#65001B, #1B6500

Split complementary#651700, #4E6500

Tetradic#65004E, #654A00, #006517

Tints, shades & saturation

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

Lighter +40%#3269FF

Lighter +30%#0044FE

Lighter +20%#0036CB

Lighter +10%#002998

Darker −10%#000D32

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001B65

Less saturated −25%#0D2158

Channel breakdown

G27

B101

Red0 (0%)

Green27 (10.6%)

Blue101 (39.6%)

Hue223.96°

Saturation (HSL)100%

Lightness19.8%

Dominant channelBlue

Hex per channelR 00 · G 1B · B 65

Keep nerding

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

#001B65

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

Nerdulate something else