Colour

#01051B

#01051B
Blue
Dark
Nearest: Black

#01051B is a blue with RGB values 1, 5, 27 and HSL 231°, 93%, 5%. It is a dark colour, so white text on it reaches 20.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#01051B#01051B

HEX#01051B

RGBrgb(1, 5, 27)

RGB (0–1)0.0039, 0.0196, 0.1059

RGB percentages0.4%, 2%, 10.6%

HSLhsl(230.8, 92.9%, 5.5%)

HSV / HSBhsv(230.8, 96.3%, 10.6%)

CMYK96.3%, 81.5%, 0%, 89.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer66,843

CSS custom property--colour: #01051B;

Brightness & contrast

Relative luminance0.00194WCAG 2.x, 0 is black and 1 is white

Perceived brightness9.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 20.22:1

Contrast with white20.22:1WCAG normal text: AAA

Contrast with black1.04:1WCAG normal text: Fail

Greyscale equivalent#060606

Inverted#FEFAE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00081Cno red cones; affects about 1% of men; ΔE 1.3 from the original

Deuteranopia#00051Bno green cones; the most common form, about 1% of men; ΔE 0.3 from the original

Tritanopia#000A0Eno blue cones; rare, and affects men and women equally; ΔE 10.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text20.22:1WCAG large text: AAA

Contrast with black, large text1.04:1WCAG large text: Fail

Named colours

Black · ΔE 12.7 Dark slate grey · ΔE 34.1 Dim grey · ΔE 44.5 Dark slateblue · ΔE 47.6 Midnight blue · ΔE 49.1 Slate grey · ΔE 51.4

Nearest named CSS colourBlack (#000000)ΔE 12.66, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B1701

Analogous#01121B, #0A011B

Triadic#1B0105, #051B01

Split complementary#1B0A01, #121B01

Tetradic#1B0112, #1B1701, #011B0A

Tints, shades & saturation

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

Lighter +40%#0829E0

Lighter +30%#0620AF

Lighter +20%#05177D

Lighter +10%#030E4C

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00041C

Less saturated −25%#050717

Channel breakdown

B27

Red1 (0.4%)

Green5 (2%)

Blue27 (10.6%)

Hue230.77°

Saturation (HSL)92.86%

Lightness5.49%

Dominant channelBlue

Hex per channelR 01 · G 05 · B 1B

Keep nerding

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#01051B

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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