Colour

#102A51

#102A51
Blue
Dark
Nearest: Dark slateblue

#102A51 is a blue with RGB values 16, 42, 81 and HSL 216°, 67%, 19%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#102A51#102A51

HEX#102A51

RGBrgb(16, 42, 81)

RGB (0–1)0.0627, 0.1647, 0.3176

RGB percentages6.3%, 16.5%, 31.8%

HSLhsl(216, 67%, 19%)

HSV / HSBhsv(216, 80.2%, 31.8%)

CMYK80.2%, 48.1%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,059,409

CSS custom property--colour: #102A51;

Brightness & contrast

Relative luminance0.0236WCAG 2.x, 0 is black and 1 is white

Perceived brightness43.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.27:1

Contrast with white14.27:1WCAG normal text: AAA

Contrast with black1.47:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#EFD5AE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#172E52no red cones; affects about 1% of men; ΔE 3 from the original

Deuteranopia#0A2850no green cones; the most common form, about 1% of men; ΔE 1.3 from the original

Tritanopia#003339no blue cones; rare, and affects men and women equally; ΔE 26.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.27:1WCAG large text: AAA

Contrast with black, large text1.47:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 28.8 Dark slate grey · ΔE 32.1 Black · ΔE 32.4 Midnight blue · ΔE 34.5 Steel blue · ΔE 37 Dim grey · ΔE 38.6

Nearest named CSS colourDark slateblue (#483D8B)ΔE 28.78, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#513710

Analogous#104A51, #161051

Triadic#51102A, #2A5110

Split complementary#511710, #4A5110

Tetradic#51104B, #513710, #105117

Tints, shades & saturation

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

Lighter +40%#5088DD

Lighter +30%#296CD1

Lighter +20%#2156A6

Lighter +10%#18407C

Darker −10%#081426

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#04285D

Less saturated −25%#1C2C45

Channel breakdown

R16

G42

B81

Red16 (6.3%)

Green42 (16.5%)

Blue81 (31.8%)

Hue216°

Saturation (HSL)67.01%

Lightness19.02%

Dominant channelBlue

Hex per channelR 10 · G 2A · B 51

Keep nerding

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#102A51

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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