Colour

#1D03A3

#1D03A3
Blue
Dark
Nearest: Dark blue

#1D03A3 is a blue with RGB values 29, 3, 163 and HSL 250°, 96%, 33%. It is a dark colour, so white text on it reaches 13.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1D03A3#1D03A3

HEX#1D03A3

RGBrgb(29, 3, 163)

RGB (0–1)0.1137, 0.0118, 0.6392

RGB percentages11.4%, 1.2%, 63.9%

HSLhsl(249.7, 96.4%, 32.5%)

HSV / HSBhsv(249.7, 98.2%, 63.9%)

CMYK82.2%, 98.2%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,901,475

CSS custom property--colour: #1D03A3;

Brightness & contrast

Relative luminance0.02971WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.17:1

Contrast with white13.17:1WCAG normal text: AAA

Contrast with black1.59:1WCAG normal text: Fail

Greyscale equivalent#141414

Inverted#E2FC5C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0037A7no red cones; affects about 1% of men; ΔE 28.1 from the original

Deuteranopia#0028A1no green cones; the most common form, about 1% of men; ΔE 19.2 from the original

Tritanopia#00425Eno blue cones; rare, and affects men and women equally; ΔE 82.8 from the original

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

Contrast with white, large text13.17:1WCAG large text: AAA

Contrast with black, large text1.59:1WCAG large text: Fail

Named colours

Dark blue · ΔE 9.9 Navy · ΔE 15.1 Medium blue · ΔE 20.6 Indigo · ΔE 22 Blue violet · ΔE 26.1 Dark violet · ΔE 28.5

Nearest named CSS colourDark blue (#00008B)ΔE 9.92, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#89A303

Analogous#0339A3, #6D03A3

Triadic#A31D03, #03A31D

Split complementary#A36D03, #39A303

Tetradic#A30339, #89A303, #03A36D

Tints, shades & saturation

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

Lighter +40%#8B76FC

Lighter +30%#6143FC

Lighter +20%#3711FB

Lighter +10%#2604D5

Darker −10%#140271

Darker −20%#0B013F

Darker −30%#02000D

Darker −40%#000000

More saturated +25%#1B00A6

Less saturated −25%#2B188E

Channel breakdown

R29

B163

Red29 (11.4%)

Green3 (1.2%)

Blue163 (63.9%)

Hue249.75°

Saturation (HSL)96.39%

Lightness32.55%

Dominant channelBlue

Hex per channelR 1D · G 03 · B A3

Keep nerding

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#1D03A3

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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