Recognised as Colour

#0023B4

#0023B4
Blue
Dark
Nearest: Dark blue

#0023B4 is a blue with RGB values 0, 35, 180 and HSL 228°, 100%, 35%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#0023B4#0023B4

HEX#0023B4

RGBrgb(0, 35, 180)

RGB (0–1)0, 0.1373, 0.7059

RGB percentages0%, 13.7%, 70.6%

HSLhsl(228.3, 100%, 35.3%)

HSV / HSBhsv(228.3, 100%, 70.6%)

CMYK100%, 80.6%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,140

CSS custom property--colour: #0023B4;

Brightness & contrast

Relative luminance0.04497WCAG 2.x, 0 is black and 1 is white

Perceived brightness66.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.06:1

Contrast with white11.06:1WCAG normal text: AAA

Contrast with black1.9:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#FFDC4B

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0044B8no red cones; affects about 1% of men; ΔE 23.1 from the original

Deuteranopia#0033B2no green cones; the most common form, about 1% of men; ΔE 12.3 from the original

Tritanopia#00516Cno blue cones; rare, and affects men and women equally; ΔE 81 from the original

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

Contrast with white, large text11.06:1WCAG large text: AAA

Contrast with black, large text1.9:1WCAG large text: Fail

Named colours

Dark blue · ΔE 13.1 Navy · ΔE 16.9 Indigo · ΔE 23.6 Medium blue · ΔE 23.9 Blue violet · ΔE 27.1 Dark orchid · ΔE 29.3

Nearest named CSS colourDark blue (#00008B)ΔE 13.06, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#B49100

Analogous#007DB4, #3700B4

Triadic#B40023, #23B400

Split complementary#B43700, #7DB400

Tetradic#B4007D, #B49100, #00B437

Tints, shades & saturation

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

Lighter +40%#819AFF

Lighter +30%#4E70FF

Lighter +20%#1B47FF

Lighter +10%#002DE7

Darker −10%#001981

Darker −20%#000F4E

Darker −30%#00051B

Darker −40%#000000

More saturated +25%#0023B4

Less saturated −25%#17319E

Channel breakdown

G35

B180

Red0 (0%)

Green35 (13.7%)

Blue180 (70.6%)

Hue228.33°

Saturation (HSL)100%

Lightness35.29%

Dominant channelBlue

Hex per channelR 00 · G 23 · B B4

Keep nerding

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

#0023B4

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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